Ok, so if I understand correctly... They can be interchanged, sort of. The tapers are the same, NMTB has a short cylindrical section, the others don't. The main difference will be in the height of the pull stud, and how the flange keys to the spindle? I don't know for sure which taper the spindle I'm looking at has, but I'm guessing it's NMTB, which appears to be the most common, right?
Regards,
Ray L.