[class.member.lookup] lookups names in base class *subobjects*

I think subobjects do not contain names, but base classes do.

[class.virtual]/2 also says "(base) class (sub)object" when it should say "(base) class":

A virtual member function C::vf of a class object S is a final overrider unless the most derived class (6.7.2) of which S is a base class subobject (if any) declares or inherits another member function that overrides vf. In a derived class, if a virtual member function of a base class subobject has more than one final overrider the program is ill-formed.

I believe such fix would be consistent with the wording in [class.derived]:

A class B is a base class of a class D if it is a direct base class of D or a direct base class of one of D’s base classes.

Read the cited [class.member.lookup], [class.virtual]/2, and [class.derived] clauses in the draft source. Check whether the references to base-class subobjects are accurate and whether the proposed wording is consistent across the clauses. Done means the relevant standard wording is corrected and the surrounding terminology remains consistent.