How to find out all the users who got SU01 ?

Q. How to find out all the users who got SU01 ?

A. You can use SUIM >User by complex criteria or (RSUSR002) to find this out.

Go to the Selection by Authorization Value.
In Object 1 put S_TCODE and hit enter.
And put SU01 in Transaction code and hit execute (clock with check) button.
I use authorization object, as you can use this to test any object.