>>3095162m4/3 shooter here, and just choosing from lenses i own:
Panasonic Leica 15mm f1.7
Panasonic 42.5mm f1.7
Olympus 14-150mm f4-5.6
sacrificed a 25mm (the m4/3 equivalent of a "nifty fifty") for a very fun wide angle lens, a workhorse 85mm equivalent prime as I usually like to shoot longer focal lengths, and a weather-sealed 10x optical zoom lens for the versatility
and though i haven't used it, the Panasonic Leica 42.5mm f1.2 is considered an amazing lens by virtually all accounts, so that would easily make most people's lists