The Blue Whale: above 100K BTC
Whale: 10K-100K BTC
Orca: 1K-10K BTC
Dolphin (The common dolphin): 100-999 BTC
Popoto (The smallest dolphin): 10-100 BTC
Tuna 1-10 BTC
Herring 0.1-1 BTC
Minnow 1sat-0.1 btc
Post other suggestions, but have to be consistent (with whale).
It looks like there are only a total of 20-40K or so of Blue whales, whales, orcas and dolphins combined.
A very small group indeed.
Pointless denomination, if you ask me, but I guess there's nothing wrong with indulging. But you do know it's this kind of thing that somehow makes the financial world take a long time to warm up to crypto. It's still seen like a virtual play thing incapable of being serious with terms like these.
Anyway, we already know from public addresses where the concentration of Bitcoin wealth lies, even if we can only speculate on how many of those are actually unique, and how many of those entities are individual. I think more solid research has shown that dolphins and up are an even smaller group than you think, if classified as unique individuals.