I use personal software: https://overmod.org/
If I'm being entirely honest I made it in a very 'scratch-my-own-itch' way so you're better off just writing it yourself. Example idiosyncratic choices I went with: all lists are public, allow subscribing to other people's lists, no login required for lists, only Google Chrome support. I doubt anyone else shares those preferences.
I like your killfile lists
> Roshan's Socialism Slop
I omce made a podcast screener for my kids, and that was a category I screened for there as well.
If you add a LICENSE or CONTRIBUTORS file, I'd be tempted to fork or contribute.
( You're perfectly okay to not want either of those things, of course. )