Yes you’re right. I’ve never used anything other than simple cypher merge statements or the load csv method.

Looks like the neo4j-admin import command would be better for massive data loads, like initializing a neo4j db using a preexisting relay with lots of data.

And a fourth option: APOC procedures to load from “diverse sources like json, xml, and other databases.” I’ve used graph data science for PageRank but don’t think I’ve ever used APOC. Probably worth looking into.