Reviewing some pistols I own that are safer for appendix carry I came up with this list:
HK P 2000 ( DA SA pistol )
S&W M&P compact 2.0 with safety
Sig 320 compact with safety
HK P 30 compact ( 10 round limit though )
WALTHER P 99 ( DA SA).
I would be a bit anxious trying to carry a Glock, PPQ, PDP etc as they have short trigger pulls on them. I imagine there are some more; but those I have.
The Walther P 99 is one sweet pistol and it is too bad Walther dropped it. I understand everyone wants optics and the P 99 does not fit that desire. I still like the P 99 though.