honestly i think some of the weird calls are from pyyyour and lange streams, i remember when they played IM. i watched them stream scrims when they did map reviews or call outs before scrims they originated the china call on viaduct and the africa call on snakewater. im not sure if they originated the cheese call on snakewater tho
cafe call on sunshine i think was from seanbuds stream too
idk i think a lot of them are taken from popular streams and people just copied it