I've only tried one or two copycats, but found them to be kinda crappy. And I see a lot of other reports of others' experiences that seem to back that up.
Not saying they're all universally garbage, but you get what you pay for: the RPi folks manage cost very carefully, whereas most of the copycats are just trying to undercut on price, and will never follow through with the kind of software support the RPi folks continue to provide after over a decade. Consider that the original Raspberry Pi 1 model -- released 12 years ago -- is still fully supported by Raspberry Pi OS. I'd be surprised if most of the copycats support their boards for more than a few years at most.
RPi's for-profit arm mostly deals with B2B sales, and courts the kinds of customers that require long-term support as table stakes. I don't think most of them would touch the copycats with a 10-foot pole.