Substack has outgrown its newsletter roots. It is now an influential, emerging media channel that works like a vast conversation engine that carries politics, code, faith, and sports in one roaring current. I analyzed thousands of posts to surface the twenty strongest narratives so far in 2025. Trump debates lead the pack. AI breakthroughs chase close behind. Lifestyle, wellness, and relationship essays still draw steady crowds. The mix shows where urgency meets curiosity, and where new voices can still break through.
How to read the cluster analysis. Each dot is a single Substack article. Natural-language algorithms classify semantically relevant topics and themes into contextually similar narratives on the platform. The space between clusters also matters. Wide gaps mean minimal overlap in language or meaning, so coverage shows that it stays insulated inside their bubbles. That separation hints at a fragmented media landscape within Substack; lively, yes, yet rarely cross-pollinating across narratives.
Those are the descriptions and summaries of each of the Substack trends so far in 2025.
1. Trump Criticism and Politics (319 articles)
At the heart of this narrative is a constant stream of critiques, debates, and commentary focused on Donald Trump and the broader political landscape. Writers dive into controversies, policy decisions, and the ripple effects of Trump-era politics, often with strong opinions and impassioned arguments.
2. AI and Software Development Trends (185 articles)
Here, the spotlight is on the dizzying pace of change in AI and software development. From breakthroughs in generative AI to ethical dilemmas and fears of automation, these articles capture both excitement and anxiety about where tech is headed.
3. Sports Analysis and Commentary (177 articles)
This cluster brings together fans, analysts, and armchair quarterbacks, all eager to unpack the drama of the sports world. Whether it’s breaking down game strategy, celebrating victories, or lamenting tough losses, the energy here is passionate and relentless.
4. Religious Sermons and Reflections (171 articles)
This narrative leans into faith, spirituality, and moral reflection. Writers share sermons, devotional thoughts, and personal stories that encourage a deeper connection with religious traditions and spiritual practices.
5. Market Volatility and Tariffs (141 articles)
In this group, the conversation turns to the economy — specifically, worries about tariffs, trade wars, and unpredictable market swings. There’s a strong current of unease as authors try to make sense of shifting financial landscapes.
6. Vaccine Safety Concerns Raised (131 articles)
Running through these pieces is a thread of skepticism and concern about vaccines. The writers here challenge mainstream medical narratives, questioning vaccine safety, regulatory integrity, and public health policies.
7. Tesla Struggles Amidst Market Downturn (130 articles)
This narrative zooms in on Tesla’s turbulent ride. From stock woes to leadership controversies, the articles paint a picture of a company facing headwinds — and of a brand mythos starting to fray.
8. Climate Change Skepticism and Energy Policy (118 articles)
Here, the dominant voice is one of pushback against the mainstream climate narrative. Authors critique green energy policies, question the urgency of climate action, and advocate for alternative, often traditional, energy approaches.
9. Food and Lifestyle Blogs (112 articles)
Light, colorful, and personal — this narrative is all about sharing the joys (and occasional messes) of food, home life, and creative expression. Think recipes, entertaining tips, and reflections on everyday living.
10. Reflections on Relationships and Life (108 articles)
At its core, this narrative is a collection of deeply personal musings. Writers open up about love, loss, friendship, and growth, weaving intimate portraits of what it means to live and connect.
11. Personal Health and Wellness Journeys (99 articles)
This narrative feels like a warm conversation over coffee about health, healing, and self-improvement. Authors recount fitness wins, mental health battles, and holistic wellness discoveries, with an emphasis on personal transformation.
12. Entrepreneurial and Startup Life (88 articles)
If you’ve ever wondered what it’s like to build something from scratch, this is the place. Entrepreneurs share war stories, lessons learned, and the real, messy realities behind innovation and hustle culture.
13. Literary and Cultural Criticism (86 articles)
In this narrative, books, films, and pop culture are put under a sharp lens. Writers dissect creative works and cultural trends, offering praise, critique, and thought-provoking analysis.
14. Reflections on Writing and Creativity (78 articles)
This one reads like a love letter to the craft of writing. Authors reflect on the struggles, joys, and existential questions that come with putting words to paper (or screen).
15. War and Global Conflict Concerns (76 articles)
The mood here is heavy, with writers sounding alarms about rising global tensions, wars, and humanitarian crises. There’s a sobering, urgent tone to much of the discussion.
16. Conservative Political Commentary (70 articles)
From a right-leaning vantage point, this narrative covers everything from government skepticism to cultural critiques. Writers champion traditional values and push back against progressive ideologies.
17. Gender and Identity Discussions (68 articles)
This cluster dives headfirst into one of today’s most charged debates — gender, identity, and societal norms. The perspectives are varied but often critical of emerging cultural shifts.
18. Satirical Takes on Modern Life (61 articles)
Sharp, witty, and often hilarious, this narrative skewers the absurdities of contemporary society. Through satire, writers critique politics, tech obsession, and the quirks of modern living.
19. Technological Skepticism and Surveillance Concerns (59 articles)
A sense of unease runs through these pieces, questioning the price of technological progress. Privacy, surveillance, and digital control loom large as recurring fears.
20. Discussions of Faith and Spirituality (57 articles)
In this quieter, more introspective corner, writers explore belief, doubt, and the search for meaning. It’s a narrative rich with personal testimony and philosophical pondering.
Why Substack Matters for PR in 2025
Substack is quickly shifting from newsletters to become a strategic media channel. Its rapid growth over the past 12 months underscores its rising influence in shaping public conversations. The recent launch of its news feed allows creators to publish images, short videos, and even livestreams directly to their audiences. This move transforms Substack into a full-fledged content ecosystem where audience engagement extends beyond traditional text-based formats.
If your role involves public relations, media strategy, or brand communications, you must prioritize Substack now. Monitoring this platform and actively participating in relevant narratives will give you a decisive advantage in audience insights, influencer partnerships, and message amplification. With Substack’s influence expanding rapidly, waiting could leave your brand chasing rather than leading critical conversations.
