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- 1Feifei’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
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
- 3The 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
- 4Write, 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
- 5Newsletter 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
- 6Upgrade2K 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
- 7How 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
SubstackSeveral times a week · last post 9 days ago
Salvation lies within
Likely audience: Substack readers
2 shared topics
- 9newsletteroperator.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
- 10newsletter.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
- 11Lazy 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
- 12Economics Matters by Laurence Kotlikoff163K subscribers
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
- 13The 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
- 1420/80 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
- 15Write 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
- 16Jamie 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
- 17The 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
- 18Romance Audiobookworms79K subscribers
SubstackMonthly or less · last post 26 days ago
Stuff Your Earbuds Day
Likely audience: Indie author supporters
1 shared topic
- 19Profound Ideas 56K subscribers
SubstackEvery two weeks · last post 6 days ago
I have a profound interest in ideas.
Likely audience: founders
1 shared topic
- 20Write • Build • Scale44K subscribers
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
- 21The Culture Dump38K subscribers
SubstackEvery two weeks · last post 4 days ago
Art & Literary Historian.
Likely audience: Newsletter subscribers
1 shared topic
- 22ILLUMINATION Library for Freelance Writers38K subscribers
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
- 23The 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
- 24Substack Writers at Work with Sarah Fay37K subscribers
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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