My view on the afterlife is:
You follow a faith or religion: you give them judgement over your afterlife. You follow Judeo pantheon? you either get into heaven and stay human, become an angel (by zadkiel administration) reincarnate after a while, or go to their realm where they send the “punished”
you follow the norse? you are open to Valhalla, reincarnation into their framework/worlds, or go to Hel.
Celtic? you are led to the underworld where you rest for a time and either choose to reincarnate, become someone’s spiritual guide and work your way into living among the gods (not as one) or staying within the different areas of the Celtic underworld one being often called Avalon, realm of Arawn or the realm of Cernunnos/Don.
You follow no one? you go to the etheric/spiritual plane either as your true self or reincarnate as one of the many races there.
you choose to not move on? you wander the energetic layer of the physical or ‘middle world’ in which overtime you’re likely to become a lost soul as there are many of those within the middle world that seem insane.
there are a plethora of pantheons where if in their good graces a human soul has “ascended” to being one of the races from Valkyrie, to angels, to demons, etc depending on the pantheon.