it is pretty accurate for terminal 2. the sidewalk/footpath in the middle is the indoor corridor that staff uses. for the first floor. there is a footpath right next to the entrance. on the west side of the first floor, the ticket counters are located for volaris/china airlines/alaska/avianca/delta/frontier/jetblue/united. 

Alaska airlines is near the stairs/bathroom, then delta, followed by volaris, frontier, jet blue, united and china airlines. Can't remember if avianca was east or west of volaris, but i am pretty sure it is in between volaris and delta

in the middle, there is an stairs heading to the TSA checkpoint. Also behind the stairs is the first floor bathrooms. on the east side of the terminal on  first floor is baggage claim area