+1 spirorbids. Those things latch on and never move. They spread fast. But they’ve never been a problem for me other than aesthetics. Seems your torch brought all kinds of hitchhikers.Those almost look like spirorbids, those are harmless filter feeders. Look at spirorbids at the link below to confirm.
they are about 3/4 the way down the list.
Edit: Forgot I can just snip the pic lol.