I saw the following 42 aircraft at Monterrey, Mexico MTY on Wednesday, September 11, 2019:
N139UP A300F-622R United Parcel Service (UPS)
N208SY ERJ-175-LR (ERJ-170-200 LR) United Express
N221NN ERJ-175-LR (ERJ-170-200 LR) American Eagle
N321NB A319-114 Delta Air Lines
N377AR 737-86J(WL) Aeromexico
N434YX ERJ-175-LR (ERJ-170-200 LR) American Eagle
N524VL A320-233(WL) Volaris
N80343 ERJ-175-LR (ERJ-170-200 LR) United Express
N831US MD-83 USA Jet Airlines
N88325 ERJ-175-LR (ERJ-170-200 LR) United Express
N89315 ERJ-175-LR (ERJ-170-200 LR) United Express
N894AT 717-2BD Delta Air Lines
N922AT 717-2BD Delta Air Lines
N982AT 717-2BD Delta Air Lines
XA-ACT ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-AEP ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-AFH ERJ-145-LR Transportes Aéreos Regionales (TAR)
XA-ALD ERJ-170-STD (ERJ-170-100) Aeromexico Connect
XA-ALU ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-ALW ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-AME 737-852(WL) Aeromexico
XA-AMM 737-852(WL) Aeromexico
XA-BAV A320-214 Interjet
XA-BIO A320-214 Interjet
XA-DAS Superjet 100-95B Interjet
XA-DRC 737-852(WL) Aeromexico
XA-GAK ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-GAM ERJ-170-STD (ERJ-170-100) Aeromexico Connect
XA-GAQ ERJ-170-STD (ERJ-170-100) Aeromexico Connect
XA-GEO A321-211(WL) Interjet
XA-IJA A320-214 Interjet
XA-JFH ERJ-145-LR Transportes Aéreos Regionales (TAR)
XA-UNY 737-322 Magnicharters
XA-VAA A320-232(WL) Viva Aerobus
XA-VAK A320-232(WL) Viva Aerobus
XA-VAO A320-232(WL) Viva Aerobus
XA-VAQ A320-232(WL) Viva Aerobus
XA-VAR A320-232(WL) Viva Aerobus
XA-VIL A320-271N(WL) Viva Aerobus
XA-VIQ A320-271N(WL) VivaAerobus
XA-VRH A320-271N(WL) Volaris
XA-VRI A320-271N(WL) Volaris