Total supply of XLM is 103.8 billion, there are 18.5 billion in circulation and it is not a mineable coin.
Who holds 85 billion XLMs?
The answer is needed to determine the level of XLM decentralization.
New XLM coins are generated every day. It's part of the code. I think it's +2% annually. So, nobody holds 85 Billion XLM, they currently are non existant.