The Alpha Foxtrot 1911-S15 is a double stack 9mm 1911 that is slimmer than a single stack 1911.
I have one. It measures 1.07" across the frame in the grip area. My single stacks measure around 1.25" across. Being so slim and being a solid frame, rather than a frame with grips added, the sides of the grip area do not contribute much to traction for controlling recoil. But, the S15 has really good checkering on the front and back straps, which makes it very easy for me to control recoil. It is very pleasant to shoot for a gun in that size category.
The 1911-S15 uses magazines from Shield Arms that they make and sell for the Glock G43X/48.
DLC coated slide. Alloy frame. Optics ready. Threaded barrel option (so, 3.5" barrel or 4.25" with threaded portion). Rail.
Mine has been flawless and stepped up to be my EDC a few months ago. The trigger was a bit heavy when new but has broken in to be pretty much perfect for ME for EDC. Right at or just under 4# on my digital pull gauge.
If you want a 1911-style carry gun without the bulk of a 2011, check out Alpha Foxtrot.
I am done buying single stacks. There are too many solid double stack options available now, for every application. No longer any need to compromise on capacity.