Most active Culture & Ideas Substack groups.
22 Culture & Ideas communities are ranked this week out of 623 observed, with data through Oct 22, 2026 (UTC). Most active right now: Brilliantly Dark, The Female Lead Subscriber Chat, Olutoyin O. Adedaramola Subscriber Chat.
Scores come from privacy-safe daily totals reported by Subshack installations that are members of each group. A day counts once three independent installations confirm it; no message or member identity is ever stored.
Privacy-safe · rolling seven days
7-day community activity leaderboard
Real groups observed by Subshack
Activity data is collecting
Listed after the first public observation. Scores start when three independent installations report activity for the same full UTC day.
The Bulwark Subscriber ChatNews & Politics · 1M members2/3 signals
Science Briefing Subscriber ChatCulture & Ideas · 158K members2/3 signals
PersuasionNews & Politics · 130K members2/3 signals
Neuroscience & PsychotherapyHealth & Wellbeing · 72K members2/3 signals
Freddie deBoer Subscriber ChatCulture & Ideas · 70K members2/3 signals
Onward with Ava DuVernayCulture & Ideas · 55K members2/3 signals
GIRLSCulture & Ideas · 54K members2/3 signals
Commonplace PhilosophyCulture & Ideas · 51K members2/3 signals
Serious Literary AuthorCulture & Ideas · 50K members2/3 signals
More to HateNews & Politics · 42K members2/3 signals
Matriarchal BlessingCulture & Ideas · 41K members2/3 signals
default.blogCulture & Ideas · 40K members2/3 signals
@jasmine’s substackTech & AI · 39K members2/3 signals
All Hands ScienceCulture & Ideas · 39K members2/3 signals
Luke Burgis NewsletterMindset & Spirituality · 37K members2/3 signals
The Social JuiceBusiness & Careers · 37K members2/3 signals
Amie McNee Subscriber ChatCulture & Ideas · 36K members2/3 signals
BAD AT KEEPING SECRETSLifestyle & Relationships · 34K members2/3 signals
Everything Is AmazingCulture & Ideas · 31K members2/3 signals
India Arie The Soulbird PerchMindset & Spirituality · 26K members2/3 signals
Center for Creative Writing Subscriber ChatWriting & Growth · 20K members2/3 signals
The Bulletin 411: A Take on Culture and EducationNews & Politics · 18K members2/3 signals
The Nature-Nurture-Nietzsche NewsletterCulture & Ideas · 18K members2/3 signals
In Moda VeritasLifestyle & Relationships · 17K members2/3 signals
Get PublishedWriting & Growth · 16K members2/3 signals
Curious About EverythingCulture & Ideas · 14K members2/3 signals
Dire Straights Subscriber ChatLifestyle & Relationships · 13K members2/3 signals
ExtracurricularCulture & Ideas · 13K members2/3 signals
Wisdom of Crowds Subscriber ChatNews & Politics · 13K members2/3 signals
Teaching in the Age of AILifestyle & Relationships · 12K members2/3 signals
David Didau: The Learning SpyCulture & Ideas · 10K members2/3 signals
Letters from the Future (of Learning)Culture & Ideas · 10K members2/3 signals
Plato's Academy Centre NewsletterCulture & Ideas · 10K members2/3 signals
Cognitive WonderlandCulture & Ideas · 9.3K members2/3 signals
Silence, Brand!Business & Careers · 8.9K members2/3 signals
The Historian's DeskCulture & Ideas · 8.6K members2/3 signals
Philosophy bear Subscriber ChatCulture & Ideas · 7.5K members2/3 signals
The Absent-Minded ProfessorTech & AI · 7.2K members2/3 signals
The Overflowings of a Liberal BrainNews & Politics · 7.1K members2/3 signals
Write What You Know Subscriber ChatWriting & Growth · 7K members2/3 signals
Quietly BecomingCulture & Ideas · 6.8K members2/3 signals
How to EvolveMindset & Spirituality · 6.5K members2/3 signals
Mat Auryn | Musings & NewsMindset & Spirituality · 6.2K members2/3 signals
Midstory MagazineCulture & Ideas · 6K members2/3 signals
The Black SheepNews & Politics · 4.8K members2/3 signals
DIY Design Club Subscriber ChatBusiness & Careers · 4.7K members2/3 signals
The Shadow PressMindset & Spirituality · 4.3K members2/3 signals
A Writer’s Voice Subscriber ChatCulture & Ideas · 3.8K members2/3 signals
Chat des abonnés de Paper LifeboatLifestyle & Relationships · 3.4K members2/3 signals
Wannabe WisdomWriting & Growth · 3.3K members2/3 signals
Futurist LettersCulture & Ideas · 3.1K members2/3 signals
Paranormal Casefiles Subscriber ChatMindset & Spirituality · 3K members2/3 signals
imi Subscriber ChatCulture & Ideas · 2.6K members2/3 signals
The Heart ConnectionCulture & Ideas · 2.6K members2/3 signals
Priyanshu’s Substack Subscriber ChatLifestyle & Relationships · 2.1K members2/3 signals
Made by HistoryCulture & Ideas · 2K members2/3 signals
Chris B. Writes Subscriber ChatCulture & Ideas · 1.9K members2/3 signals
Nimila ꩜ Studio ShyamaCulture & Ideas · 1.9K members2/3 signals
Seoul InsideFinance · 1.8K members2/3 signals
Soulful WitnessCulture & Ideas · 1.7K members2/3 signalsFound an incorrect listing? Contact the Subshack team.
Category data & methodology
About Culture & Ideas Substack communities
What are the most active Culture & Ideas Substack groups this week?
1. Brilliantly Dark (62/100); 2. The Female Lead Subscriber Chat (33/100); 3. Olutoyin O. Adedaramola Subscriber Chat (32/100). These positions use the current seven-day activity index through Oct 22, 2026 UTC and can change when a new qualified day is added.
How large is Subshack's Culture & Ideas groups index?
This page contains 623 observed Culture & Ideas communities inside Subshack's index of 1,867 public Substack groups. The category covers books, philosophy, history, science, literature, art, music, film, and essays. Metrics use a rolling seven-day window through Oct 22, 2026 UTC.
What is the current activity rate for Culture & Ideas communities?
22 of 623 observed groups currently qualify for ranking, an activity rate of 4%. Here, activity rate means the share of observed groups with at least one complete UTC day confirmed by three independent Subshack installations during the seven-day window.
How responsive are Culture & Ideas Substack groups?
Ranked Culture & Ideas groups recorded 42 aggregate messages in the current window. Their mean published reply rate is 2.9 replies per thread, calculated from the 22 ranked communities; it is a conversation signal, not a guarantee that any individual post will receive a response.
How does Subshack calculate the seven-day activity score?
Each complete UTC day combines aggregate messages, active participants, replies, and help requests into a score from 0 to 100. A day counts only after three independent Subshack installations report it. The leaderboard uses the mean of qualified days in the latest seven-day window; raw messages and member identities are never stored in the public index.