If I were doing a MAINTENANCE wash using a waterless wash - then I would do second option you listed.
Thing is - I rarely do maintenance washes. Almost all my washing is PREP washing.
Out of the three options you gave, I would go with the purple Cobra Super Plush Junior Microfiber Towels - 16" x 16"
Why? These are a tick stouter than the other two you listed. The other two are really soft and fluffy, I just prefer a more stout towel for wiping.
The above does seem to be the logical conclusion. A fluffy longer nap being better able to trap dirt IN the nap versus trap it between the nap and the paint - as in the nap of a less fluffy nap or flat weave nap.
I have know idea. It has never made sense to me.
An argument can be made that it's better to have too many choices than too few choices.