While there were Pure Arms, Semi-Spell, Hybrid-Spell and Pure Spell user "Priest" templates (customized Clerics) in the Channeling Companion spell selection really played the bigger role in designing them out of it... but that's Rolemaster where your spell list choices are much more individualized than in HARP. You are right there is a section in it giving examples, but they hinge mainly on the base spell list selections, so I'm not sure how much help they'd be in a HARP game.
There were one or two examples of Priests in the RM Quarterly PDF's I did that included Cyradon 'cleric' or 'priests' but they were designed in the Rolemaster format rather than the HARP format.