Looking for scifi Youtubers that mainly focusses on scifi concepts.

Title says it all but here's several I enjoy:

1. Quinn's Ideas - https://www.youtube.com/@QuinnsIdeas

I discovered so many books from him. If it wasn't for him I wouldn't have picked up Hyperion. He was also a major part of me getting hyped for the recent Dune adaptation. But what pulled me to him was discussion of concepts or specific components of books rather than the overarching stories.

2. Isaac Arthur - https://www.youtube.com/@isaacarthurSFIA/videos

I think I found him through a dead hard/military scifi facebook group. But Isaac Arthur's channel mostly covers scifi technolgies, it's implications, how it works etc. Though I'm not a big fan of his recent use of AI generated thumbnails. Pretty disappointing as a scifi youtuber imo.

That being said, I'm mainly looking for channels that talk about concepts and just about lore superficially.