"hereafters" reveals that I have done quite a lot of this already! I knew that I had posted about a vision or dream of Gratillonius' soldier, Budic, wandering in a hereafter but could not find that post by searching for "Budic." This is because Budic is not named in the post, which is here.
I will remark here only that every possible idea of a hereafter seems to have been imagined and believed by someone. In Indian religious philosophy, the soul is to be freed from reincarnation whereas, in Wicca, the Summerland is merely a respite before renewed incarnation: a complete reversal, and one with no reason whatsoever to accept it, as far as I can see.
That series of The King Of Ys covers is particularly attractive. If Dahut could just appreciate the beauty of the natural world around Ys, then she would not need to be ambitious, malicious or spiteful. I said just that about another female character in a Poul Anderson historical fantasy... See here.