a couple more loose ends:

Perhaps the difference between Balder/Balor and Lugh/Loki/Louhi, and also the reason that the latter supplanted the former, is that Baal was specifically a solar deity whilst Lud was, like Apollo, a god of light? Just a thought - but certain Lughnar language is suggestive of the Moon, not the Sun.

Also, the following question is very relevant: if Lugh/Llew/Loki/Louhi are the descendants of the same ancestor as the Norse Odin and the Sami Wainamoinen, then why do the former have solar associations whilst the latter don't? I dunno - as I say, I'm still researching. But I would say that ALL dying and resurrected gods can be argued to have their roots in the solar cycle (even those ones who are more to do with vegetation, since the vegetation's cycle of growth and decay is determined by the solar year).