I've come to the conclusion that Hacker News is the best aggregator out there. Substack knows my interests yet gives terrible recommendations. Youtube constantly recommends the same videos or exaggerates my interest in a topic based on a few views, spamming me with related content until I watch something unrelated. The only downside of Hacker News is that its focus is narrower than other sites. But perhaps because the focus is "Anything that good hackers would find interesting" there is a bias towards things I find interesting with less noise than more commercial offerings.