I think
@FordTechOne has made the comment previously that Raptor / 10R80 1st gear is pretty low, and really quick to exit into the next gear. In normal mode, and driving like you’re on “island time / at the beach” you’ll go 1-3-5 at steady throttle. You can alter this a little by slightly altering the throttle input, so if you take off gently, but then gas it before exiting 1st gear, then let off a little, it will go 1-2-4-6. If you’re not quick enough to alter throttle input, it will shift 1-3-4-5-6 etc.
Running sport mode eliminates the skip shift feature, but it’s meant for sport use. I find it a little easier to be inarticulate with shifting if I’m lazy with throttle input. If you’re used to driving around in normal, you just need to use sport a little to “get it”.