Freya as Astarte/Ishtar/Inanna was my thought as well.

Just briefly looking into it, it could be that Frey may have come from Bel/Ba'al. Both their names are titles meaning "Lord" and both are associated with weather and fertility.

This is more tenuous, but Njord may actually be derived from Tiamat, if the theory that he was originally the goddess Nerthus is correct. All three are connected to the water.