If you want more complete bowl wash, I would be checking the Toto line.
The Toto Cotton White is a good match to the Kohler White.
Toto Sedona Beige matches Kohler Biscuit
Toto Bone matches Kohler Almond.
Good flush, good rinse, Easy installation, fairly quiet.
I've used the Cimarron too, it plugs more than the Toto, and misses some of the bowl wash.
Best toilet out there?
Maybe the Toto Soiree and Guinevere.
Comfort height, skirted bowl, softclose seat, Sangloss glazing, amazing looks, swirling double cyclone rinse, excellent flush.