Lamb, Ridley and Wilson for a 6th, 10th and 13th is pretty tasty.
Fields is tempting, but with 6 pt pass TDs, his rushing TDs don’t help him as much. The 6 pt pass TDs do help Mahomes, though, so it’s way more tempting to keep him for the 2nd instead of Lamb for the 6th, just because of the positional dominance he offers.
If you only HAVE to start 2 WRs, then I would keep Mahomes with Ridley and Wilson; if you HAVE to start 3, then keeping the triplets is probly best.