@ hamanu23
Here's a short list off the top of my head, both tig and lug builders. By no means does this cover everyone. Bicycling Magazine had a really nice list that spanned two pages earlier this year....too bad I can't find it now. IMHO, I think US built titanium frames are going to be very desirable in the future...perhaps even more so with the next generation of enthusiasts.
Bruce Gordon
Vanilla
Bilenky
Serotta
JP Weigle
Kirk
Independent Fabrications
Igleheart
Dean
Moots
Vicious
Waterford
Ellis