Lesswrong by multiple rationalists
Essays, guides, discussions about practically any topic.

Phys.org from multiple scientific sources
News from (natural) science research.

NODE
Cyber ideas and news, do-it-yourself tech projects...

Minding your way Nate Soares
The president of the Machine Intelligence Research Institute shares insights about for example in communication, our limits, and emotions. One of the greatest pieces is On caring.

Hardcore zen by Brad Warner
Down-to-earth zen monk occasionally shares their thoughts.

Wildmind by Bodhipaksa
Insightful ideas from meditation teacher. For example about love languages

Same old zen by Alex Kakuyo
In How to save the world, they highlight the idea from saying "think globally, act locally".

Deconstructing yourself by Michael Taft
Deconstructing Yourself is based on Michael Taft's conversations with meditation-related people.

Information is beautiful founded by David McCandless
Visualisations of anything.

Visual capitalist mostly owned by Editor-in-Chief (Jeff Desjardins
Well-visualised reports about many topics within capitalist system.

Jani Kaaro on Rapport
Excellent science journalist writes about diverse matters well and points toward what matters.

Mark Manson
Writes about important things in life, such as values, relationships, and decision making.

James Clear
Texts include important topics like Manson's and additional focus on habits.

Better explained by Kalid Azad
Learning math, computer science can be intuitive and clear when the goal is understanding, not simply remembering information.

Elä paremmin by Jevgeni Särki
Finnish blog about living better. Diverse topics include teamwork and communication, understanding oneself and other people.

Nollahukka by Aino & Otso
Finnish blog about zero waste.