hallowed is the internal release group at MTV. Their aim is to produce highly streamable (think Plex/Jellyfin) but still high quality encodes. They also always include English subs and dual audio for foreign films. The quality of their releases are good but very few as they only started releasing under that name about 5 months ago.
However, if you are gunning for highest possible quality/bitrate (and file size) you can get, go with releases by CtrlHD, MainFrame or W4NK3R.
Sorting a music library is a very manual process. Your best bet is MusicBrainz Picard to clean up your metadata then use something like Lidarr and Lidarr Extended to maintain and continue to add to your library.
FraMeSTor is the internal group at BHD. EPSiLON was previously releasing on PHD but left a couple years ago. They release to TL but are not nearly as active as they once were.
I prioritize FraMeSTor, and they have more releases post-2020.
Cloudflare’s CAPTCHA is Turnstile. I’ve found it very useful. It doesn’t use pick the image or type the text, it’s just tick the box. You can even set it to invisible, then the user doesn’t need to even do that, the challenge is sent to the browser and is completed automatically.
Cloudflare’s Turnstile has an invisible mode that you’re probably using in a lot of places and aren’t aware of it. It provides an invisible challenge to the browser and requires no interaction. I would say no input require in quite user-friendly.
They both will automatically create an address on-the-fly. Give a service whatever@domain.tld and it will automatically be generated and sent to your mailbox of choice.
I have run Jellyfin for about 3 years. Plex has a lot of community support and praise so I spun up a test instance. Unfortunately for Jellyfin, Plex is much most reliable for me in pretty much every way. I would love for Jellyfin to keep improving but the switch to Plex just made the media experience so much nicer.