Lower blood are usually very submissive.

Middle blood can be submissive-dominant

Higblood are usually the dominant one.

Sometimes they can be switch.

Lower blood can be dominant

Middleblood can be submissive

Higblood can be submissive-domminant

Example:
Cronus and kankri, cronus usually be the one who dominate kankri because kankri is submissive.

Meulin and kurloz, meulin can be either submmisive nor dominant towards kurloz but usually kurloz who controls her around so he's dominant.

Sollux and eridan, they're kismesis but the dominant one usually sollux more then eridan