I don't think you have much of a plumber if they can't tell you what valve will work.

Both compression and sweat valves can be installed close to the wall escutcheon. Maybe not tight against, but close.

I just had to replace a 1/4-turn stop valve that had frozen in place after 16 years. It had a plastic stem and wasn't supposed to corrode in place, but it did. I replaced it with a high quality Brasscraft valve, KTCR19X-C, with chrome plated brass stem and dual O-ring seals. A high quality valve for only twice what I paid at the box store years ago. Bought what I needed to finish our basement kitchenette, and will keep some on the shelf as other old valves fail. My go-to plumbing site is below.

https://www.supplyhouse.com/Supply-Stops-637000

1. Why do those brass fittings on the supply lines both appear to be on crooked?

2. Did you get a permit for this installation? I'm asking because that bottle trap under the sink is not allowed by code in many jurisdictions across the U.S. Bottle traps do not perform the same as a P-trap.

That is a picture from Kingston Brass website so it might not be a real install at all. This is the first time I'm hearing that bottle traps are not not allowed by code in some areas. I actually used bottle trap in our business location in Union NJ and it did pass inspection.

https://www.howtolookatahouse.com/Blog/Entries/2018/7/why-is-the-european-style-bottle-trap-not-approved-by-the-plumbing-codes-in-the-us.html