If you’re talking light, for the most part you’re talking small, too. Low profile is good if you can find a suitable one. If you post your TV specs you’ll get better responses from the posters. And you need to understand the ratings to make a good decision. But from Phoenix you’ll be climbing a lot of grades and I’d try to stay well under your max capacities otherwise you’ll be doing a lot of tiresome climbs.
My TT is an old 16’ and 3000# loaded. I pulled it with a full size Bronco with a 302 and it did well in all the mountain driving I did. It worked harder than my present F150 5.4, but I have no complaints about the 302. I haven’t kept up with the newer TT’s so I can’t offer you any specific suggestions. But you need to research TT’s that fit your requirements and balance that off with the size and weight you’re comfortable towing. Good luck.