I imagine a multiverse having levels. The bulk being the level of the parallel universes. Parallel universes being separate entities from the begining. Hilbert space being the level of the divergent timelines. An infinite group of divergent timelines starts out as one universe, over time one universe becomes an infinite group of universes. Stupid ideas like the dark multiverse were never needed or even interesting. Hypertime originally came accross as the divergent timelines under a new name with many stupid rules. Like the idea that divergent timelines merge back into one universe.