Yes, I also instantly thought ACCM but I'd expect Gold Rush and Cross from ACCM, over Cup, for instance.The player I associate most with Berbers is ACCM, for what it's worth. But that doesn't strike me as an ACCM map draft. Hell, Gold Rush is the one map where I'd actually like Berbers and Sigismund banned it.
Berbers/Incas/Celts is very Yo, but he banned Mudflow so kinda weird as well.
Incas/Romans/Celts pretty DauT, but certain we saw DauT.
Definitely unique and definitely can be a huge tell, just don't see for who exactly. I'd say we've had the most interesting civ picks so far, with plenty of unique picks.