Shaved bare skin is pretty fast. The dimples are supposed to disturb the air and remove the surface friction. I see a lot of debate here, mostly depends on surface.
Compression is also preferred,maybe so your core can relax.
Anyway, since naked racing is not allowed, I don't know there is a lot of test data on it.

For booties...
I *think* generally a covered shoo with shaved, oiled leg is better. It is cooler, and weighs less than a bootee.
That stuff is when looking for second/s.