People I (mostly) admire
Blogs that are curious, and science-minded
WaitButWhy – deep investigations of meaningful topics: how society functions, should you freeze your body after death, etc. But with stick-figures and a lot of personality.
Stratechary – meaningful analysis of tech companies: competition, money, and organizational structure.
Barking up the Wrong Tree (Eric Barker) – science-backed (or just science-inspired?) life tips: emotional wellness and personal development.
Productivity Youtubers
Ali Abdaal — How to remember what you read. Another standout: content ingestion system (for articles, websites, etc).

Matt D’Avella – productivity and “wholesome work life” motivation.
College Info Geek — really focused on productivity apps and systems for school.
Deeply Scientific Youtubers
Real Engineering — beautifully produced, broadly appealing but deeply specific videos about building cool things.
Wendover Productions — logistics about everything (especially airlines).