There is no way bitcoin was made by 1 person. It was definitely a group of people. Finney came up with the name, Back came up with the genesis block. Multiple people were posting as satoshi, and multiple people made the software. I strongly suspect Szabo knew about it, and was involved. Craig Wright knows Finney was Satoshi. Kleiman and Dai were probably involved. There is no way 1 person could have made bitcoin.