I suspect any I mentioned are. Seeing that you are on the east coast there are likely many qualified builders closer to you. IME it is preferred to work with someone 'local' if possible. Google or forum searches should yield a list.
Here's a start:
https://forums.thepaceline.net/showt...=framebuilders
In NY Coast can do trad steel quite well. Bedford can do steel, ti or AL. 22 has you covered for ti.
Plenty of other options as you widen your circle of consideration.