This is just a guess, but the first one is Lampropeltis getula getula, the second one is Lampropeltis mexicana mexicana, the third used to be Elaphe situla (not sure what the genus is now) and the fourth one is Lampropeltis mexicana thayeri. Very nice pictures by the way.
Very close Mr. Hammack....
The first is an axanthic L. g. splendida
All of the others you nailed!
Btw Steve,
Can you share some of your old thayeri pics?
I have a few that come from some of your animals........and I would love to see them if you have some pics of them........