Your only real options are the Chevy Suburban (preferably a 2500 series if you don't mind buying a 2013 or older vehicle) or a Ford Expedition. You could go way back and get a Ford Excursion but they are getting more rare all the time and some have the extremely problematic 6.0 diesel.
A Chevy Tahoe might look like an option but with the third row seats in use there is basically no cargo space. Also, the longer the wheelbase of the tow vehicle the more stable it is so a Suburban is better.
Out family of 5 travels quite nicely in our 2500 Suburban. I pull a 6,500 pound boat with it. Our 3 kids all sit in the middle row. I've had 3 bikes, coolers, grill, tools boxes, 5 camp chairs, and all our other luggage behind the middle seat one time.