There are dimensional differences, though. I had a 2015 XLT and now have a 2024 Limited. Both were/are non-Max. Wheelbase (+3.5"), overall length (+4"), and overall width (+1.6") are greater with the 2024 vs the 2015, though curb weight is less (-220 lbs).The Gen 3B has some of the features (and issues) as Gen 4.
And, of course, the technology difference between the 2015 and 2024 is huge.