Cleric C2 > Priest C3 > Chaplain > PD2
Cleric C2 > Priest C3 > Chaplain > Miko > Inquisitor
Cleric C2 > Priest C3 > Chaplain > Kabbalist > Taoist
Cleric C2 > Priest C3 > Krivis > Kabbalist > Taoist
Cleric C1 > Priest C3 > Chaplain > Miko > Kabbalist > Inquisitor
Cleric C2 > Priest C3 > Krivis > PD2
Taoist is subjective, it’s more for quality of life on ET than anything else (if your party doesn’t have a proper Taoist that is).
Krivis for Daino (you can use scrolls instead).
Miko + Inqui works for the combo of Kagura + Wheel, specially with Blessing procs.
The most popular choices are the first 2 of them.
Kabbalist doesn’t really fit into this build if you want my honest opinion, their skills are kinda lackluster and the main reason you go Kabbalist is for the SP regen with Ein Sof, which as a Priest going for SPR you’ll have A TON of SP and you’ll NEVER run out of SP with this build, so in solo play it’s very useless for you, only maybe for dungeon runs for your teammates.
With the first build you’ll have a very easy time questing, you won’t run out of sp for being full SPR or SPR/CON and with healing factor you won’t need to heal that often, however can get a little by annoying recasting 5-6 buffs every min.