There are two Legacy brooms. is it possible to make the distinction in the rules? One is from linking your account and the other is from Seeker Mastery.

As both Legacy brooms are Classed under the same broom type (e.g upgrading the one upgrades the other and we saw that there was no difference in the stats either) we allowed it to be used as under the skin variation clause

So there really isn't any restrictions in the brooms? Like from the list you provided, I can use all the brooms available.

ATM no real restritctions as all base brooms can be earned normally through gameplay we only provided the list as a just in case they bring new broom type that can only be earned via season pass or if they release a DLC