Are there new ones that carry the torch? Do the successors to these release groups have their trackers too?
The vast majority of public torrent indexers do not run their own trackers.
Dead trackers are common with old torrents. Personally I remove all the public trackers and just let DHT take care of that.
But if you prefer to have active public trackers on there then you could
- Remove all the dead ones
- Add the top x trackers from https://github.com/ngosang/trackerslist