If it was me...and it kinda is, I'd look at a Scout camper, short bed model if it's just you....but make sure you talk to the misses, that may warrant the long bed model.....
I looked and looked for trucks, I ended up with a 2021 Ram 2500 w/6.4 hemi, by far the best deal I could find. I looked at the F250's also, but they were trending $8-10k more than the Rams....love the flat rear floor but engine, trans and the rest of the truck was a wash for me between the two. Really like the truck so far. Depending on weight and use case, some of the F150's with the "HDPP" (Heavy Duty Payload Package) can easily handle a small camper...but generally special order. I had one on order for 3+ months with no end in sight (2 months ago), but may be different now with supply chain issues smoothed out a bit.
Forget any of the fancy 'offroad' models if you are looking for a camper, payload is very limiting.
Do you need a lift and big tires?
So for me (maybe I am getting old), stock Ram w/Hemi, newest one you can get, 4 door, short bed and stick to 33's or 34's on the stock suspension package....it's plenty tall. Get dual battery setup, maybe a rear locker, hidden front winch and call it good...my 2c.