FF 3 has the OG job system. I would recommend either the PS1 remake or the GBA one since it originally appeared on the NES. FF Tactics has a pretty robust job system, Tactics Advanced as well (not my most favorite as the Judge system isn’t to my liking). FF 12 has a job system as well but a bit shallow IMO compared to the previous ones mentioned.
FF 3 has the OG job system. I would recommend either the PS1 remake or the GBA one since it originally appeared on the NES. FF Tactics has a pretty robust job system, Tactics Advanced as well (not my most favorite as the Judge system isn’t to my liking). FF 12 has a job system as well but a bit shallow IMO compared to the previous ones mentioned.