I personally think there may be some PB2 Youtubers out there, who made videos without getting enough feedback for them.
Recently, I have found a youtuber called "PeteyEDGE", his pb2 related videos are totally incredible! For example his video "Starlight" is really good Imo.
Another one would be "Pixelbyte", the two montages which he made are so good aswell.
Lastly, "JDC 55", he has made some very solid mini edits. My favourite one being Mini Edit #3.
So, those are my choices for quite 'unnoticed' or underrated PB2 Youtubers, what about yours?