Do Archivist have the broadest illusion spell lists? Well, given that they can potentially learn ALL illusion spells (well and all spells in general) that is certainly the case.
Are there other classes or combos that even come close to the ability to learn this breadth of spell knowledge?
Mostly this has peaked my interest as I am currently playing a Shadowcraft Cloistered Cleric but in my spell research and such there is just SOOO many nifty and flavorful illusions that are not possible if one is either arcane or divine (ala cleric). Sure, either version really does give you plenty of illusion options and even the best of them.
It would just be nice to make an illusionist where you can know all of both worlds for the most diversely complete illusionist experience and options.