>>12985533to put this into brainlet terms,
Michelson, Lorentz and Poincare all found this theory in different ways, looked at it, saw that it didn't quite work with the known accepted model of physics at the time, and scrapped it.
Einstein plugged new variables/equations into making a working theory, and proved it with the previous model's mathematics. There's a reason we have the old saying 'Standing on the shoulders of giants', because that's what he did to get to that point.
he didn't cite anybody else though, just worked with 'public domain' knowledge