Poison Spark: https://pastebin.com/YcwzcL94
Great in both open maps and tight maps though really needs phasing for the latter. Best of the three for delirium due to life based explosions.
IB: https://pastebin.com/Ky6rnh4q
Needs tight maps to really excel (haunted mansion, toxic sewer, underground sea, etc). Most effort to play but also most badass feeling.
WO/HoI: https://pastebin.com/KaNs6gmy
Simplest playstyle. Occultist easily scales aoe but needs crit/freeze scaling elsewhere (hatred crit watchers eye, freeze chance flask suffix, etc). Assassin easily caps crit/freeze but needs aoe scaling elsewhere (vast power med clusters, unnatural instinct @ top left scion).