Your variety tree will also be lopsided. One variety will way outgrow the others.
Might require a lot of pruning. Here is one I grew. Taller and far outgrowing is
changshou kumquat. Smaller one is clementine. I cut off the clementine when
my other clementine tree got some size. Rootstock was seedling sunquat.
I also had a blood orange variety tree: sanguinelli, tarocco, valencia, and Vaniglia Sanguigno.
Vaniglia Sanguigno far outgrew the others. When I tasted the acidless fruit I chopped that branch off.
I also had numerous satsuma trees with one branch of other mandarins on them. Also had a mature page with
several trial mandarin branches. Had a golden grapefruit with duncan, bloomsweet and ruby red branches.