I saw the following 32 aircraft at Monterrey, Mexico MTY on Friday, September 13, 2019:
N205SY ERJ-175-LR (ERJ-170-200 LR) United Express
N223NN ERJ-175-LR (ERJ-170-200 LR) American Eagle
N365NB A319-114 Delta Air Lines
N507VL A320-233 Volaris
N86322 ERJ-175-LR (ERJ-170-200 LR) United Express
N89304 ERJ-175-LR (ERJ-170-200 LR) United Express
N89308 ERJ-175-LR (ERJ-170-200 LR) United Express
N994AT 717-2BD Delta Air Lines
XA-ADT 737-800(WL) Aeromexico
XA-AEO ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-ALH ERJ-170-LR (ERJ-170-100 LR) Aeromexico Connect
XA-ALO ERJ-170-LR (ERJ-170-100 LR) Aeromexico Connect
XA-CBA A320-214(WL) Interjet
XA-GAD ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-GAQ ERJ-170-STD (ERJ-170-100) Aeromexico Connect
XA-GAX ERJ-190-AR (ERJ-190-100 IGW) Aeromexico Connect
XA-HAC ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-JOY 737-852(WL) Aeromexico
XA-MLR A320-214 Interjet
XA-NAM 737-752(WL) Aeromexico
XA-UNY 737-322 Magnicharters
XA-VAQ A320-232(WL) Viva Aerobus
XA-VAS Superjet 100-95B Interjet
XA-VAT A320-232(WL) Viva Aerobus
XA-VAU A320-232(WL) Viva Aerobus
XA-VER Superjet 100-95B Interjet
XA-VIH A320-271N(WL) Viva Aerobus
XA-VIJ A320-271N(WL) Viva Aerobus
XA-VIL A320-271N(WL) Viva Aerobus
XA-VIO A320-271N(WL) Viva Aerobus
XA-VOI A319-132 Volaris
XA-VRH A320-271N(WL) Volaris