Greek mythology doesn't really have a direct comparison to Yggdrasil and the cosmological structure it embodies. Instead, ancient Greeks focused on deities centered around Mount Olympus as the center of their universe. While there is no direct predecessor, Yggdrasil's involvement in pop culture may not be uncommon for literary adaptations drawing eclectic materials from various mythologies into creative stories.There are likely cross-cultural thought movements as well which transcended borders.

Das Kontinuum der Aquarii ("The continuum of the Aquarians") was the work of European neo-pagan movement bringing together topics derived from Hinduism, Native Americal Culture , Kabalistic ideas altered by their perceptions.Likewise tropes seen Norse myth like hammer/Uru ( Mjolnir), gift/Einsignni (magic ring) etc. has shown profound influences amidst popular representations within Hallmark Dramas etc.The mixing of multiple cultures can eventually culminate in change other psyche likewise feeding off our frst instincts weaves richness of connascence whih spreads beyond imagination !!