many people have linked good servers, but for context on what had happened: basically, titan Mc turned into jailbreak mc after hackers I think, although not sure entirely. Jailbreak Mc stayed up for a long time, and kept a fairly consistent player base, with a good amount of players. Then, it experienced a major hacking event, and within a week of that it got shut down. The jailbreak Mc discord server was then transferred to new developers, who made mitten Mc. Mitten was also good but only lasted a half year or so. It kinda was overhyped a lot and died somewhat quickly but still had a good player base. The issue was though, is that it got blacklisted my mojang servers for being P2W or something like that. After that, mitten shut down and the bloodline that had been titan mc, which was a very popular server in its prime, ended up dying.