The 1911 trigger is a slide trigger rather than a hinge or moment arm trigger.I am puzzled by the design of the 1911 "solid" (no space to rear) trigger. I had assumed the original Browning had it that way to make it less likely to become fowled in combat conditions. The modern 1911 seem to have odd looking cut-outs from this design, perhaps to reduce weight. Why not just a typical trigger with space on both sides?
I found this photo of a Sig and some trigger mods:
And this is what's referred to as a skeletonized trigger Sig on left & 1911.