Deepbollywood Motte

Well I guess this is quiet easy to answer. Yes. Some houses of landed knights are lords in all but name, my first thoughts go to house Templeton. They have a lot of land and in this system they have to manage it. So I think that there are landed knight below them but no lords. Hierarchy doesn't work like that. If you're a lord, no knight will tell you what to do. Otherwise your lordship will be revoked soon