[ExI] Everett worlds

[Giulio Prisco]

I'm researching Everett's quantum mechanics again. Is there any
interpretation or variant of Everett that you are aware of where more
than one but not all Everett worlds are real?
For example, one could think that a new "real" world is spawned only
when there's an inconsistent time loop in a current real world (this
seems to be the case in Greg Benford's science fiction novel
Timescape).
Or, one could think that Everett world's are selected according to
some reality criteria and only some (but not all) worlds are accepted.
Like in genetic programming, where many parallel evolutions are
generated but only some are selected for continuation.
Thoughts?