Democritus, Spinoza and Kant
These natural philosophers had a different vision that seems far more beautiful, and does not violate Occam’s Razor so grotesquely.
They envisioned an hierarchy of worlds, but with the same laws and principles manifested on each fundamental scale of the hierarchical cosmos.
The multiverse, which qualifies as pseudo-science more than “scientific cosmology”, involves something like 10⁵⁰⁰ different “universes”, each with different physics. The ugliness of this model is astounding, not to mention completely alien to of the crucial testability required of science.
There is empirical evidence that nature is an infinite hierarchy characterized by discrete self-similarity, with the same laws and principles governing each fundamental cosmological scale. If this seems too good to be true, I offer the following as encouragement.