Was it ever established explicitly how much faster than normal the clones age? I've always had it in my head that it's pretty much double, though can't remember if that was stated outright or it's just been an assumption on my part this whole time.
If that is the case though, it does raise the very real possibility that the Bad Batch are even more accelerated than normal. I mean let's do the math: Omega ages at a normal rate like Boba, and we know Boba was grown first, so she can't be any older than him at this point (fourteen to fifteen or thereabouts.) However she doesn't seem anywhere near that old, much more like nine or ten. Eleven tops! So for her to have been old enough to 1) be aware of what's happening and 2) remember so clearly, she'd have to have been at lest five or six when the Batch were in that lab (which would have been 4 or 5 years ago, right at the start of the war.)
And if the Batch were young enough at the time that they didn't remember being altered, then they must have been only infants; one or two years old, max. So that means they're all about seven years old. For a normal clone, even with accelerated aging they wouldn't fully developed until at least nine or ten, and even then just barely. They've seemingly been operating for at least a few years before the war's end, so that means they were combat ready at five!
Maybe part of their enhancement was an experimental three, or even fourfold accelerated aging? If so then I think we know why these guys don't show up in 'Rebels'. They're not long for this galaxy...