This channel host a lots of different coding conference talks but most of them are hand selected and are of good quality: https://www.youtube.com/c/CodingTech

This channel maybe the best in terms of quality about low level design. If you are a programmer make sure to checkout his low level design playlist: https://www.youtube.com/c/anomaly2104

This is a quality channel to get an intuition for algorithmic thinking: https://www.youtube.com/c/vantonspraul

This is a pretty advanced Rust channel: https://www.youtube.com/c/JonGjengset

If you are a Frontend developer and you want to understand the primitive stuff, how things work from inside do checkout this channel, contains lots of problems and solution including implementation of vDOM, polyfills for Promise, Async Await and various JS stuff: https://www.youtube.com/channel/UC0qiieVBpjA6YODgIFf6Afg

These two are nice intro channels to get into rust: https://www.youtube.com/c/timClicks https://www.youtube.com/c/RyanLevicksVideos

If you like maths, do checkout this channel: https://www.youtube.com/c/zachstar

This channel also uploads rarely but the quality of videos is very high, it contains general news and stuff related to Science(Physics, Chemistry, Bilog: https://www.youtube.com/c/QuantamagazineOrgNews

If you want to understand modern web layout give this channel a try: https://www.youtube.com/c/LayoutLand

If you are any how involved in Crypto, this is a must to subscribe: https://www.youtube.com/c/Finematics

I see I have posted tons of channels but I think these are really good, in terms of quality of content.