I have not played many custom games, but even in the crimson caldera, where everything is about war, I've had AIs with a diplomatic or a merchant theme. In those 5 custom games I've started so far (each had 6 to 7 players, me plus AI) I have not met one aggressive AI yet, even early game focused or rather battle spell and unit focus AIs tend to be merchants or politic focused.
I personally would prefer more aggressive AIs.
#AI is almost always diplomat
vital raft
blissful lagoon
Maybe this also depends on the difficulty the ai is set to
thorn halo
idk fam. Mine go to war a lot. If only we could trade AI lol
vital raft
Maybe this also depends on the difficulty the ai is set to
the hardest
vital raft
idk fam. Mine go to war a lot. If only we could trade AI lol
agreed
I hate passive AIs
mellow rune
idk fam. Mine go to war a lot. If only we could trade AI lol
I think yoko stole all the peaceful AIs from us. I can barely remember any AIs that haven't been aggressive barbarian bloodlords.
mellow rune
Being evil also helps. You get a free -300 relationships with everyone 
vital raft
But I wanna be able to play the world saviour with the AI actually attacking me, or use the good alignment thing on high culture... That ain't possible with my luck
mellow rune
Well.. ehh.. the game mechanics kinda make it so even the bloodthirstiest xeno lord will love you when you're purely good.
No war for you
vital raft
Well.. ehh.. the game mechanics kinda make it so even the bloodthirstiest xeno l...
But I don't even meet a bloodthirsty xeno lord. I only meet Sundren the diplomat and Ydgaard Worldbender the super good alignment merchant
mellow rune
One thing you can do is to create your own bloodthirsty overlords, and then let the AI choose your creations
vital raft
Well, my swarm which is a barbarian culture with the cannibal and plunderer traits is a nice diplomat too
brazen mist
Lmao