ZHP is a dungeon crawler. I'd say SRPGs are closer than Dungeon crawlers, myself. Granted, they're all in the same boat. Turn-based, not turn-based, whatever. Party size 1, party size 10, whatever. Movement field, no movement field, whatever. The more distinctions you make the harder it is to draw the line, until we can no longer say for sure whether or not Grandia falls into the SRPG bucket because it has AOEs and movement and the like.