ok another AI+ mercenary question

[seleucid empire]

ok does the a.i. NEVER recruit mercenaries below hard campaign difficulty or just rarely??? Same with rebels. Do the rebel armies NEVER attack you below hard campaign difficulty or just very rarely

Ive sent my spies around the map and ive seen some armies of Carthage and Bactria with 1-2 units of Mercenaries. But other than that i havent seen many in this game. Ive looked around the Roman armies and did not find a single mercenary. The pools in italy are all full

Early on my campaigh i was besieged by a rebel general but after that rebels never besieged my cities again.

So im asking is there ANY chance that AI could recruit mercenaries on medium or easy campaign difficulties??

oh yeah and the reason i am asking is because i forgot what camp difficulty playing on for one of my campaings