Your specific requirements don't leave many guns, and most have covered them.
Classic SIG P-series. These will have a decocker with no safety typically. They are a little large for carry, and a little heavy for alloy guns, but doable if you want to carry (for a small carry gun that is metal, not striker and has a decocker only, look for an out of production single stack P239).
CZ 75. I love my CZ 75B based guns, but a 75B has a 1911 style safety despite being DA/SA. If you want to use it with a DA first shot, you have to lower the hammer by hand. You will want to look for the CZ 75BD (full sized, steel), CZ PCR (compact service pistol, alloy), or CZ P01 (essentially a PCR with a rail) to get a decocker and no safety.
Beretta 92. It is hard to find the 92G (decocker only model), and they can be expensive. However, Beretta sells a conversion kit to make one of their standard decocker/safety models into a decocker only Beretta 92:
https://www.beretta.com/en-us/gun-accessories/handguns/kits-parts/beretta-m9-92-96-g-conversion-kit/
Edit:
I re-read the OP, so you are OK with a safety if it is a 1911 style pistol...
If you want to replace your polymer and striker guns, if you want a carry gun, and you'd prefer a 1911, my first preference in that world would be a Springfield Armory EMP (I don't know how it would fare against my CZ PCR without the 1911 preference since I don't have one yet). You can get the smaller version (3" barrel, slightly shorter grip) with 9 round mags, or a slightly larger version (4" barrel) with 10 round mags. If you want a carry pistol that would be a strong contender.