I saw the following 42 aircraft at Monterrey, Mexico MTY on Thursday, September 12, 2019:
N186SY ERJ-175-LR (ERJ-170-200 LR) Alaska Airlines
N240NN ERJ-175-LR (ERJ-170-200 LR) American Eagle
N251NN ERJ-175-LR (ERJ-170-200 LR) American Eagle
N261NN ERJ-175-LR (ERJ-170-200 LR) American Eagle
N326NB A319-114 Delta Air Lines
N80348 ERJ-175-LR (ERJ-170-200 LR) United Express
N85352 ERJ-175-LR (ERJ-170-200 LR) United Express
N86336 ERJ-175-LR (ERJ-170-200 LR) United Express
N87302 ERJ-175-LR (ERJ-170-200 LR) United Express
N87345 ERJ-175-LR (ERJ-170-200 LR) United Express
N946AT 717-2BD Delta Air Lines
N950AM 737-852(WL) Aeromexico
N974AT 717-2BD Delta Air Lines
N982AT 717-2BD Delta Air Lines
XA-ACS ERJ-190-AR (ERJ-190-100 IGW) Aeromexico Connect
XA-AEF ERJ-190-AR (ERJ-190-100 IGW) Aeromexico Connect
XA-ALO ERJ-170-LR (ERJ-170-100 LR) Aeromexico Connect
XA-AMJ 737-852(WL) Aeromexico
XA-AMM 737-852(WL) Aeromexico
XA-BAC ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-EAC ERJ-190-LR (ERJ-190-100 LR) Aeromexico Connect
XA-GAG ERJ-190-AR (ERJ-190-100 IGW) Aeromexico Connect
XA-GAQ ERJ-170-STD (ERJ-170-100) Aeromexico Connect
XA-MBA A320-214(WL) Interjet
XA-PAT A321-211(WL) Interjet
XA-PPY Superjet 100-95B Interjet
XA-UHE A320-214 Interjet
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-VAS Superjet 100-95B Interjet
XA-VAW A320-232(WL) Viva Aerobus
XA-VCE 737-3H4(WL) Magnicharters
XA-VIH A320-271N(WL) Viva Aerobus
XA-VIK A320-271N(WL) Viva Aerobus
XA-VIL A320-271N(WL) Viva Aerobus
XA-VIO A320-271N(WL) Viva Aerobus
XA-VIQ A320-271N(WL) VivaAerobus
XA-VIR A320-271N(WL) VivaAerobus
XA-VLY A321-231(WL) Volaris
XA-VOI A319-132 Volaris