A more informative chart would certainly be helpful, given that while IPTorrents is harder to join than TorrentLeech, it's also not as good in terms of content. At the same time, while I don't think TorrentLeech belongs in the B-Tier, it's certainly among the easiest to join of the trackers in the A-Tier while not be the most useful as a launchpad for joining better trackers in the A and S tiers. Of the trackers that have open signups, AlphaRatio seems to be a better starting point, but I've unfortunately yet to get an invite to it.
Might be better for the niche tracker list, but I'd put MVGroup as a B-tier documentary tracker. While its releases often seem to be a downgrade in quality from what they should be (720p releases for 1080p documentaries and 1080p releases for 2160p documentaries), what they do have is usually well-seeded and is sometimes the only easily-accessible source for niche documentaries.
While the suggestions by other commenters to use Qbittorrent's search functionality combined with add-ons (including one for Jackett integration) is a great way to index public tracker releases, I'd also recommend periodically checking for open signups to TorrentLeech given that some releases are either better seeded there or have higher fidelity video and audio tracks. Some private trackers are even better, but TorrentLeech is among the easiest to join.
While it seems that the new startup movie is exclusive to the 1TB OLED model, is that model's exclusive keyboard theme the same as the prior 512GB Steam Deck (DEX-85) or a new one?
Will the extension be updated to use Manifest V3? If it isn't, it seems that compatibility with Chrome might not last much longer, unfortunately.
Edit: Was just asking as I recently installed the extension and Chrome complains that it uses Manifest V2. While Firefox is better than Chrome for lots of reasons, until I make the switch I was just wondering if the extension would keep working given that the alternative 12 foot ladder isn't tall enough for several paywalls...
FileList seems to be recommended as an easily-accessible private torrent tracker in the same way that TorrentLeech is. In my experience FileList isn't nearly as likely to have a release in contrast to TorrentLeech, but for what it does have many releases seem to be well-seeded. I'd suggest putting it in the B-Tier.
Proton VPN since it's cheaper than ExpressVPN but apparently faster than other paid VPN options, while also having port forwarding to improve torrent connectivity.
Frugal Usenet is on the same backbone as Usenet.Farm, so a better block account option would be Newsdemon on the UsenetExpress backbone. Apparently the Frugal Usenet year plan comes with a BlockNews block (Omicron backbone) as well, which seems to have a retention length closer to that of Eweka.
Edit: My mistake, only the Frugal Usenet bonus server is on the Usenet.Farm backbone.
Admittedly, if you're already using private torrent trackers, you'll probably find more missing releases by working towards joining higher tier trackers than usenet alone has. Usenet is more worthwhile for people without high enough bandwidth to build the ratio needed to join such trackers.
While 'the paywall for access' argument can be made for usenet indexers (which just index NZB files, not the releases themselves, with most still allowing up to 5 downloads a day via free membership tiers), in contrast to torrenting, usenet providers cache newsgroup binaries (the actual releases) on the servers of their respective usenet backbone. Because of that, releases that might run out of active seeders on public or even private torrent trackers after a few years are sometimes available for significantly longer on usenet.
Edit: While it's not an excuse for the usenet indexers, rather the providers, usenet newsgroup binaries are downloaded directly from the servers of providers, and are thus not P2P like bittorrent is.
For some shows I've noticed that it's not too difficult to get around half of their seasons in 4K, with the 4K releases for the remaining seasons being seemingly nowhere, whether it be on public trackers, private trackers, or usenet. Doesn't seem to be an issue of shows only being shot in 4K after their first few seasons, as in some cases the 1st and 3rd seasons may have 4K releases without the 2nd season having one, for instance.
Maybe the releases I was looking for aren't widely available, but neither Oxtorrent, Torrent911, nor YGGTorrent seemed to be better for finding French releases than a tracker like 1337x is for finding English ones. On another note, while I'm still on the lookout for an AlphaRatio invite, research seems to indicate that it's at least better than TorrentLeech. Conversely, unless PrivateHD is not as good as other trackers on the Avistaz network, it didn't seem to have anything TorrentLeech didn't last time I checked.