Has an ally freehub shell with titanium driver and pawls inside.
I’m guessing he’s looking for a tougher freehub body to avoid the cassette burring, not the internals for weight saving purposes.
Druidh what are you after specifically? Obviously things like Tune hubs are still pretty fragile, I’d have a DT240 with alu freehub rather than a Tune with ti if longevity is an issue!
Think White Industries do them too (ti that is).
Plenty of options with steel, but they tend to be the lower end of the market. AFAIK Mavic are one of the only ones doing ‘high end’ steel freehubs.