I have a list of ~400 imageboards/textboards from some old pastebin i found on TC maybe methinks. I wish it was possible to have the dates of their creation and closure so i could calculate the average imageboard lifetime length. From my own experience it's usually 1-2 months and posts never getting into quadruple digits (unless the board gets raided).
I have nothing else to say You're selling a pass? https://2swagg.net/pass/ Copying 4chan so shamelessly
And your name SomeBois rings a bell.