Airbus
126,7
A318 very short one emergency exit above wing. Taller tail than all the others. Tail extends above rudder
A319 One emergency exit (Unless it's an Easyjet then 2 due to passenger loads)
A320 2 emergency exits over wing. Older 320's don't have winglets
A321 No exits over wing but 4 doors down the side. Very Long.
767 or 777
777 Three wheels in a row on main undercarriage, 2 on 767 and 777 has flat tailcone, 767 pointed.