Think the flagship was Regina Or (gold) or something like that. But again are limited capacity since they are roady lightweight gear.
From distant memory, some Maillard did have some Al and Ti sprockets. One advantage is they are rebuildable and usually single sprockets cost peanuts. It's a fairly narrow time window for wide range 7 speed freewheels - arguably all gone beyond the technical limit with broken and bent axles. The Helicomatic is already there from 6 speed.
