For my black '15 Fusion and the '19 Lariat, I use the following in this order.
Chemical Guys Maxi Suds II applied with a foam cannon.
Chemical Guys Blacklight glaze.
Chemical Guys Butter Wet Wax.
It takes a little bit of work on the Lariat, but the results are beautiful !
Lasts about 8 months. All that is needed is a rinse at the local car wash.