Ceph is massively over-complicated, if I had two teams I'd probably try and write one from scratch instead.
Minio is absolutely not datacenter-scale and I would not expect anything in Go to really reach that point. Garbage collection is a rough thing at such enormous scale.
I bet we'll get one in Rust eventually. Maybe from Oxide computer company? Though despite doing so much OSS, they seem to be focused around their specific server rack OS, not general-purpose solutions
Crucible is our storage service: https://github.com/oxidecomputer/crucible
RFD 60, linked in the README, contains a bit of info about Ceph, which we did evaluate: https://rfd.shared.oxide.computer/rfd/0060