>>3239743?
Seems pretty straight forward to me:
X-T's are the slr form-factor mirrorless
X-T10/20 is the budget variant of the above
X-E's are the rangefinder form-factor ML
X-Pro's are the rangerfinder style ML with viewfinder
X-100 series is the fixed lens compact with viewfinder
X-A series is the budget, glorified selfie cams for asian grils
X-M was (dunno if it's still around) an even cheaper alternative to the X-A's
Now there's the X-H series, which is whatever the hell it's supposed to be.