> Those approved residents are not allowed to then decide to allow different people to reside at the property. Even new tenants sought out in an attempt to sublease, will have to be endorsed by the landlord. Not the current tenants.

Depends on what your lease says. The owner can give that option.

The landlord cannot legally give you the right to weigh in on a separate lease (SRO) if you'll make decisions using a protected class (i.e. you only want a particular sex in the SRO).