Best MFT lenses for true zone focusing?

Recently picked up an Olympus E-M5 II. I zone focus almost everything for street photography. On my film bodies (Nikon FM2/EM) I just set f/8 and shoot, and on the Ricoh GR, "snap focus" was effortless.

(I loved the GR, but left it because I needed a viewfinder and interchangeable lenses).

Now I’m trying to find the perfect 24mm or 28mm equivalent setup for MFT that lets me shoot blind without constantly checking focus peaking.

The Olympus 12mm f/2.0 seems ideal because of the manual focus clutch, but I've read the focus-by-wire scale can be inaccurate. Because of this, I’m heavily considering fully manual third-party glass with real, mechanical hard stops.

For anyone doing blind zone focusing on MFT:

• Do you trust the Olympus clutch scales (12mm f/2, 17mm f/1.8) out on the street?
• Which manual third-party lenses (12mm–14mm) have reliable, accurate physical distance scales? (Laowa, TTArtisan, Samyang, etc.)
• Are there any body settings/workarounds you use to mimic a "snap focus" workflow on native AF lenses?

What setups actually hold up for you when shooting fast?