Transport Evolved (they are also on Peertube), RM Transit, Gamers Nexus, Climate Town, Not Just Bikes, JayzTwoCents, Techtesters, The Linux Experiment (also on Peertube), LowSpecGamer
Basically, the main feature that’s missing is that reblogging works the same way as replying does on lemmy except it’s expanded by default. So a lot of Tumblr culture is basically ‘Yes And’ improv.