Personally, I do not know of any 8 to 9 passenger vehicles that meet your specifications. AFAIK, "big SUVs" are the only ones. In order to be towable, it will likely have to be four wheel drive, with a NEUTRAL position on the transfer case shift. It is, however, possible a lube pump can be installed to lube/cool the transmission ($1000, more or less). Such a rig will be fairly heavy, quite possibly in excess of 5000 lbs(especially if a lot of "stuff" is carried in it).
Motorhomes normally have a towing capacity of 3500, 5000, or 10,000 lbs. The 10K towing capacity is, in my experience, usually only found in high end diesel pusher coaches.
Good luck in your search.
CM1, USN (RET)
2017 Jayco TT
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1998 Dodge QC LWB, Cummins, 5 speed, 4X2
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