TexasCHLforum.com

Here's a cut from my years of experience as an MD:

SSP - Glock 19/17/34, M&P 4", Pro, L, Walther P99/PPQ 4" and 5", HK VP9/USP, Springfield XD and XDm 4-5", CZ 75/SP01 (Not Target), Ruger SR9 are most common in my experience.
ESP - 1911 9mm variants Commander/Full, Glocks/M&Ps/XD/XDms with added magwells, 2011 variants, CZ 75 SA/SP01s, most common
CDP - 1911 Full mostly, with some plastics filling in XDm 45 and Glock 21/41. Sometimes an H&K 45 or USP.
Rev - S&W 66/586/686, Ruger SP101/Security Six, typically
BUG (2016) - Glock 26/42/43, CZ P01, Walther CCP/P99C/PPS, Springfield XDS/XD/XDm Compact, M&P Shield/Compact, Ruger LC9, Kahr PM9/CM9
CCP (2016) - Glock 19 dominates, CZ P01, Walther CCP/PPQ, XDm Compact, Ruger SR9C, M&P Compact

Good start.

James