Fedidb.org recommends people who view their statistics on their “Threadiverse” tracking page that people should not use graphs and numbers from the total users due to the surge of bot-accounts, and should instead use the monthly active users. This puts the “Threadiverse” at 87,089. Lemmy with 37,197 and Kbin at 44,136. Fedidb.org also shows that the number of accounts is now at 1,75 million, though most of these accounts are probably just bots.
That’s where I started due to ease on the eyes and similar experience at first. Now I’m more comfortable on lemmy. Also, @ward2k i don’t know how it factors into active users, but they could just call kbin a home and mostly interact on lemmy communities. No idea how that affects numbers.