We find a good alternate is the Honda HRX manual trans as it is lightweight but has the features we want for everyday driver.
The process has been getting more and more difficult but we had to look at each model we were considering and sort down to what we wanted and what the manual for that specific model said was allowed as they vary a whole bunch.
For us, logic tells us, smaller is better when we want to tow, so set your priorities as to what you want to drive and when as well as what the RV is setup to tow, then shop carefully with auto transmission models being very near gone for flat towing due to the switch to CVT trans.
I might predict there will be nearly no cars built to flat tow in five more years as times are changing and there is not that big a market for the poor fuel economy of older models.
Hybrid and EV may be the better choice soon.