Newsletters like Insfluencers - Spark

24 newsletters in the NewsletterFIT index cover the same topics as Insfluencers - Spark (newsletter growth, healthcare communication and content strategy). The closest matches are Feifei’s Substack, early bird and The Creative Minority. They are ranked by how many topics they share with it, then by publicly shown subscribers.

Updated Nov 5, 2026 · ranked by shared topics, then publicly shown subscribers · methodology

About Insfluencers - Spark

Shining Light on Healthcare

Full profile
  1. 1
    Feifei’s Substack58K subscribers

    SubstackSeveral times a week · last post 2 days ago

    I ghostwrite Romance Novels, Newsletters, Emails and Social Contents for Founders, brand execs, personal brands, romance authors and literally anyone who wants to build an audience, convert them to sales, or get their…

    Likely audience: Independent newsletter writers

    3 shared topics

  2. 2

    SubstackSeveral times a week · last post 13 days ago

    early bird is the online equivalent of catching up with a friend over coffee - an invitation to pause, to reflect, to connect. Expect highly researched recommendations, essays, and ideas for a well-rounded life.

    Likely audience: beauty enthusiasts

    3 shared topics

  3. 3
    The Creative Minority14K subscribers

    SubstackSeveral times a week · last post 3 days ago

    From recent posts: The Creative Minority publishes practical guides on content strategy, writing mechanics, and community building for creators navigating Substack and newsletters. The publication mixes instructional essays on techniques…

    Likely audience: Content creators

    2 shared topics

  4. 4
    Write, Prompt, Scale8K subscribers

    SubstackMonthly or less · last post 49 days ago

    🎁 Subscribe and get free resources in my welcome email :)

    Likely audience: Substack writers

    2 shared topics

  5. 5
    Newsletter Circle6K subscribers

    SubstackMonthly or less · last post 10 days ago

    Your go-to source for building a successful newsletter business. In-depth interviews with newsletter operators and insightful reports on newsletter strategies.

    Likely audience: Newsletter creators

    2 shared topics

  6. 6
    Upgrade2K subscribers

    SubstackEvery two weeks · last post 34 days ago

    From recent posts: Upgrade publishes practical guides on Substack growth, monetization, and content strategy alongside occasional lifestyle essays. The publication targets creators seeking actionable systems to build and scale newsletters.

    Likely audience: Digital marketers

    2 shared topics

  7. 7
    How We Build1K subscribers

    SubstackEvery two weeks · last post 21 days ago

    From recent posts: How We Build is a newsletter focused on Substack strategy, growth tactics, and personal branding for writers and SaaS founders. It publishes practical guides on content strategy, audience analysis, and platform features…

    Likely audience: Content strategists

    2 shared topics

  8. 8

    SubstackSeveral times a week · last post 9 days ago

    Salvation lies within

    Likely audience: Substack readers

    2 shared topics

  9. 9
    newsletteroperator.com609K subscribers

    beehiivEvery two weeks · last post 40 days ago

    From recent posts: Newsletteroperator.com publishes tactical guides on paid acquisition, content repurposing, and distribution strategies for newsletter publishers. The site focuses on actionable tactics for growing email lists and…

    Likely audience: Digital marketers

    1 shared topic

  10. 10
    newsletter.metricool.com235K subscribers

    beehiivWeekly · last post 3 days ago

    From recent posts: This newsletter publishes data-driven social media analytics, advertising performance studies, and case studies on employee advocacy and personal branding. It targets marketers and business owners seeking evidence-based…

    Likely audience: Content creators

    1 shared topic

  11. 11
    Lazy Millionaire179K subscribers

    SubstackEvery two weeks · last post 9 days ago

    From recent posts: Lazy Millionaire publishes business-focused articles on newsletter monetization, social media growth strategies, and financial hacks like credit card travel hacking. The publication targets entrepreneurs and creators…

    Likely audience: Freelance writers

    1 shared topic

  12. 12

    SubstackWeekly · last post 3 days ago

    Economics can make a massive difference - collectively and personally.

    Likely audience: Podcast listeners interested in economics

    1 shared topic

  13. 13
    The Vigilant Fox146K subscribers

    SubstackEvery two weeks · last post 14 days ago

    Covering the stories the mainstream buries. Deplatformed during COVID. Healthcare professional turned citizen journalist.

    Likely audience: General news consumers

    1 shared topic

  14. 14
    20/80 di WeAreMarketers122K subscribers

    SubstackWeekly · last post 4 days ago

    Ogni settimana il meglio del Marketing in meno di 5 minuti.

    Likely audience: Digital marketers

    1 shared topic

  15. 15
    Write With AI115K subscribers

    SubstackWeekly · last post 7 days ago

    The leading paid newsletter for ChatGPT & Claude prompts, and how to turn AI platforms into your own personal Digital Writing Assistant.

    Likely audience: Freelance writers

    1 shared topic

  16. 16
    Jamie MacDonald101K subscribers

    SubstackWeekly · last post 2 days ago

    I share lessons from my own journey to inspire you to live as your best self. After years of experimenting with what works and what doesn’t, I’ve gleaned valuable insights that can enrich your life too. Join me on my…

    Likely audience: health-conscious readers

    1 shared topic

  17. 17
    The Weekly Scroll91K subscribers

    SubstackWeekly · last post 12 days ago

    From recent posts: The Weekly Scroll publishes interviews with content creators and editors focused on Substack Notes, Buffer workflows, and newsletter growth strategies. The publication mixes interview series with platform analysis and…

    Likely audience: Content creators

    1 shared topic

  18. 18
    Romance Audiobookworms79K subscribers

    SubstackMonthly or less · last post 26 days ago

    Stuff Your Earbuds Day

    Likely audience: Indie author supporters

    1 shared topic

  19. 19
    Profound Ideas 56K subscribers

    SubstackEvery two weeks · last post 6 days ago

    I have a profound interest in ideas.

    Likely audience: founders

    1 shared topic

  20. 20

    SubstackSeveral times a week · last post 2 days ago

    Learn how to write online, build your audience, and scale your income.

    Likely audience: Content strategists

    1 shared topic

  21. 21
    The Culture Dump38K subscribers

    SubstackEvery two weeks · last post 4 days ago

    Art & Literary Historian.

    Likely audience: Newsletter subscribers

    1 shared topic

  22. 22

    Substacklast post May 12, 2026

    From recent posts: ILLUMINATION Library for Freelance Writers publishes community updates, platform policy analyses, and creator safety resources for writers on Medium and Substack. Content ranges from operational announcements regarding…

    Likely audience: Content creators

    1 shared topic

  23. 23
    The Social Juice 37K subscribers

    SubstackSeveral times a week · last post 3 days ago

    From recent posts: The Social Juice publishes weekly marketing trend reports, AI and platform updates, and strategic critiques for professionals in advertising and brand management. The publication mixes industry news with opinion pieces…

    Likely audience: Marketing professionals

    1 shared topic

  24. 24

    SubstackSeveral times a week · last post 2 days ago

    Your future on Substack is here—with the leading Substack Strategist, Sarah Fay.

    Likely audience: Substack writers

    1 shared topic

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