To be fair wizard and specialist are hardly much different in spell selection. I think he's only including full casters here though not dabblers like the ranger + paladin.
I fixed my original post to include the corrections mentioned above, and I also added skills and feats. Here's the new stuff:
SKILLS & NON-WEAPON PROFICIENCIES
1e: not included
Secondary skills are a weak optional rule that appears in the DMG. So they are included but were ignored and unused by most folks.

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.