Interesting, looking at the KMC site. Some of the 1/8" chains appear to have full bushings, rather than the pressed half bushings that have been common on chains in the last few decades.

Bushing Construction

CITY HUNTER - KMC Chain
410H-NP Silver - KMC Chain
410H - KMC Chain

One gets lost in their wear estimates for each chain design.

Double-X Durability
Triple-X Durability
Diamond Like Coating
E-Bike
Salt Spray
Stretch Proof Treatment

etc.