I’d like to add to this by starting with comparisons I found.
Umineko (at least, in the Question Arcs) is basically a retelling of And Then There Were None, with the Epitaph making a reference to the poem at the beginning of And Then There Were None.
One could also argue that plot points from And Then There Were None are also used. After all, Umineko does have its red herrings.
And to go off of @MrDent, I actually think that Umineko’s Answer Arcs are where Aligeri’s Inferno really comes into play. One could argue that (End of the Golden Witch spoilers) when Battler acquires magic and uses it to revive Beatrice, it parallels Dante’s journey. Besides, I’ve always wondered if (more End of the Golden Witch spoilers) maybe the logic error is Battler’s equivalent of going through purgatory?
I’d also like to add that there are multiple yōkai in Higanbana. I know nothing about yōkai mythology, so I don’t know if any of the yōkai in Higanbana are actually based off of some sort of classical mythos, or if they are just something Ryukishi thought up on his own.
With that, I’ve also always wondered if (Minagoroshi-hen spoilers) Hanyuu is perhaps a reference to some sort of yōkai mythology.