This set of filters helps to make YouTube become usable and less distracting if all you want is to watch videos and don't care about YouTube's own shit algorithmic discovery.
I don't use YouTube while logged in, and I only watch videos on YouTube when I find links somewhere else. For instance, I use my RSS Feed reader to subscribe to YouTube channels (yes, that's a thing). I've maintained this set of filters over a number of months/years to make my YouTube experience less annoying, and I figured other people might want to benefit from that breath of fresh air.
Check the commented filter list file for more info on what is being filtered. I tried to make it somewhat readable. Basically: homepage content, related videos, and elements that are only of use to users logged in (and thus push you into a login page if you accidentally click them).
Installation on uBlock Origin
Import the following URL into your Filter Lists:
https://gist.github.com/shello/3ef9752c4c77b78b81f6eb63c93ddfc9/raw/lean_youtube_filters.txt
And you're done.
Alternatively copy the filter rules into your own filters, picking what you want from it. You don't get the benefit from any updates I make to these rules, but then again you might not want some of them anyway.
See CC0 1.0 Universal.