2016:
Clinton/Warren > Rubio/Jindal
2020:
Clinton/Warren > Pence/Ayotte
2024:
Booker/Sinema > Noem/Haley
2028:
Noem/Schock > Booker/Sinema
2016: Good map, but there's no way that Arkansas goes Democratic before Indiana. Hillary is not Bill. If she won Arkansas, Indiana (and possibly Montana) would come along as well.
2020: If Indiana staying GOP in 2016 was implausible, this map is nearly impossible. There is NO way that a GOP candidate would lose Idaho and win Indiana. Otherwise good.
2024: Most plausible of all your maps.
2028: Plausible (20+ years down the road) except for Michigan, which is trending Democratic.