No there isn’t. Just like there isn’t a 787-900 or a 747-800. There is a Max 7 though.

Semantics aside and to your point, nobody is really ordering it. It’s a tiny fraction of the total Max orders, and most have been deferred/delayed. The economics of it just aren’t that great. But I suppose if someone is proudly all Boeing and can’t fill a Max 8 on some routes and the incremental lower operating costs of a Max 7 make it work, maybe it would happen. Unless scope isn’t addressed and horizon flies some 190/195s instead.