Well, not ALL OF THEM, obviously you need to max Rubric and Katadikazo, Rubric is gonna be your main damage as Exorcist
So Rubric lvl15, Katadikazo lvl5, Engkrateia lvl1, Gregorate lvl1, then use the rest of points to lvl up Aqua Benedicta and Koinonia at your like, you can max out Koinonia and use the rest in Aqua Benedicta, or max out Aqua and use the rest in Koinonia
That depends on your server, and what people decide to use, remember that not all clerics are builded as “healers” or “support”, some of them are damage oriented, so it’s not impossible to have 3 clerics in a party, but it’s fairly low since people tend to use other clases as damage since they have a healer in the party, and they believe they can take any class to a party since “it’s your job” to keep them alive. Sometimes you’re gonna find parties of only scouts and mages, they have high damage but low sustainability, which is a pain in the ass, it doesn’t matter the game, if someone dies it’s always “the healer’s fault”
Templars only in GTW, you have more chances to have 3 clerics in a party than having 1 templar