The steam one is the one a mainly play on, i use the paradox one for going back and playing old versions, and the microsoft gamepass one is because i had gamepass and was trying to help figure out what was wrong with the microsoft store version at one point.Hmmm... well, I hope I didn't blow myself up inadvertently by uninstalling. Oh what the hell, if it doesn't work so be it.
And do you have those up because they all require different versions for MP? Why on earth would you have three copies of everything?