-
Hacking method: FEBuilder
-
Base Game: FE8
Is there a convenient list of all classes that are unused in the vanilla game lying around? Pretty much the first thing I’d want to do in any hack is add new classes.
Nomad? 
I think OP meant classes that are in the class list in febuilder but aren’t used in the actual game. Things like the “female mercenary”
Right.
The Cutting Room Floor page lists 10 unused classes, plus possibly 4 more in the yellow blurb at the top of the “Unused Classes” section. That may not be a complete list but it’s a start 
It’s mostly stuff that’s leftover from FE6/FE7, if that helps.
… oof. Literally only two of those actually count for me- female equivalents of existing classes are likely for me to use. But then there’s 76 and 78 so the number is actually four. Y’know. For the project I’m sticking on the backburner that I’m planning to use monster classes for- the other one that Doesn’t will be able to canniballize those for other porpoises. But then there’s 0E which I forgot to count in initial assessment oops, and then there’s probably technically Morva’s class as well.
I mean, you don’t always need every vanilla class. Female armor knights usually look the same.
And like, just remove classes you don’t plan to use, mercenary almost always gets scrapped in my projects.
My process is usually more haphazard than that, unfortunately…
Actually, class 0E contains the map sprite that transformed Myrrh uses. So, while unused in the traditional sense, it isn’t exactly free.
this thread might also be useful
it has discussion of classes that you should not edit, aside form that what other people have said is true I do highly recommend planning out all classes you need and cutting what you won’t use.
Classes like Wyvern rider, Wyvern Knight, Wyvern Lord, Knight, General, and Great Knight are very easy to make unisex due to overlapping animations and the female tag being able to be set in unit screen like in vanilla.
FuriousHaunter beat me to it, but another way to free up class slots would be to find all the classes where gender doesn’t affect map sprite (so, mounted and armored classes, generally), consolidate them into one class, and then handle gendered battle animations (i.e. for Cavalier, Paladin, Ranger) via the “custom animation by character” patch that lets you set personalized animations for certain character/class combos a la FE7.