I would say there are plenty more, this is more of a shilling of these groups type of post, not saying these are bad ones because I do not know them and I can't say if they are good or bad, but I can say that there are many good ones outside of this list as well. You can find them yourself if you google it and you can find places with 400k+ members who are mostly active.
So, I would say the best way to pick which channels you should go to would be to find numbers and engagement, if a group has 100k+ members but only 200 messages a day, that is not really an active or good group, but if it has 1000 members yet 10k messages per day, that is a very good group. Best ones are the ones that has a lot of members AND a lot of chat during the day.
Telegram has since added a number of other features that are no less attractive to crypto enthusiasts than the security of the platform. Bots make automated message delivery relatively simple, a useful trick for crypto news sites or blockchain companies publishing on multiple platforms. Cloud storage means that all messages and files are easily stored and retrievable. The ability to create an anonymous username without revealing a phone number is a huge advantage over opening WhatsApp.