Which aircraft are 76A, 76B, 77E, 77F? I have a list of of aircraft types like so:

0      320
1      76B
2      DH4
3      E95
4      319
5      76A
6      321
7      77F
8      CR9
9      77E
10     OAAG


I was able to identify most of them:


320: Airbus A320
DH4: Bombardier DHC8-Q400/Q400CC (DH4)
E95: Embraer ERJ-195
319: Airbus A319
321: Airbus A321
CR9: Bombardier CRJ-900


However there are some that I cannot understand exactly which model they are. I guess they are Boeing 767 and 777 but I am not sure which model.
Can you help me out to find out which aircraft are these:


76A
76B
77F
77E
OAAG
These are mostly IATA type designators, except for OAAG, 76A, 76B and 77E.

77F is the official IATA designation of the freighter version of the 777.

The rest:

77E seems to be an internal designation used by British Airways for a specific sub-fleet with an increased gross weight.

76B seems same as above just for 767-300ER.

I wasn't able to find anything about 76A (but I'd guess that same as above) and OAAG (perhaps it is part of the registration of an individual aircraft)