At least to me, many of the names suggested suggest someone who is much more unique and favored in a church than a regular cleric is. While the word "cleric" has mutated in fantasy to mean more and less specific things, the word itself just means a member of the clergy, not necessarily of any particular import aside from that. I think that it's important that the name for the "dabbler" path doesn't suggest that the dabbler is more pious, more favored by the deity, more unique, or more advanced in the church than the word "cleric" suggests.
I personally like Acolyte; it has the right connotation of Neophyte-iness and connection to religion. I know it's what first-level clerics were once called, but I think it's the best fit.
Otherwise, the terms "lay" and "laity", as in "lay minister", refer to people who are part of a church and who serve in the church but who aren't ordained. That might be similar to what the theme is going for; it's people who aren't full clerics, but perform some clerical duties. They're primarily something else for their day job, but do serve in the church. "Layperson" has too many other connotations (specifically, "guy who, in general, is not an expert at whatever we're talking about"), but the theme could be called "Lay Minister" or "Lay Priest".
