Need Help Choosing a Name

We brought home a Saint Bernard Colorado Mountain Dog mix puppy on Sunday. He was my Mother’s Day present. I had thought of names before we picked him up but none seem to really fit. How did everyone pick their dog’s names? The names I thought of were Larry (because my husband loves Impractical Jokers lol) and Picasso, my son thought Michaelangelo because he’s studying the renaissance right now and is super into it. Puppy was sitting with his head down, looking up at me with his mouth open in a “smile” and he reminded me of Pennywise, but I feel like that’s too long. Other names we thought of were Rorschach (Rory), Mister, Max and Bigfoot (lol). I prefer non common dog names and am open to human names. I can’t decide!