As Meat Loves Salt is one of my favorites. It is definitely set much earlier than the period--it takes place during Oliver Cromwell's seizing of England.
I would second Charlie Cochrane. I've mainly read her mystery series which starts prior to WW1 and proceeds through it. (
The Cambridge Fellows Mysteries). I refer people to her all the time; she needs to start paying me commission.
I didn't see in the OP that romance was mentioned. So I would think any historical that centered on non-heterosexual men could be included. Altho I suppose since it was "M/M" one would assume there were two such men in the story and things might happen.
Also will second Snowball in Hell by Josh Lanyon. It is a mystery novella with romantic overtones. He told me recently that when the sequel comes out he may release the two together in one volumne--that's what I'm waiting for.
And again just check out the catalogue of
my publisher--all historical m/m fiction. Mine are too early for you (both turn of last century, and the second not available until Sept. /shameless plug) but there are many other fine writers there. (They also published Junction X which I have not yet read but which is cleaning up on great reviews!)
And finally a personal recommendation, Wingmen, by Ensan Case, which is a reissue of a story written many years back, but it fits your period perfectly.
ETA: Ug, I loathed The Catch Trap. I can't NOT recommend it enough.