At a prior company I'd occasionally lease dedicated servers from INAP (now calling that part of their business HorizonIQ after bankruptcy and reorg) - https://www.horizoniq.com/services/compute/bare-metal/

Their business was always a bit chaotic but the technical side of the organization was competent. We were colo'd in one of their datacenters so it was nice to be able to rent additional capacity in the same facility. Servers were manually provisioned, but manageable as you'd expect via online portal after provisioning was complete.

So... not a glowing recommendation I guess, given their corporate instability? But a recommendation nonetheless, the corporate instability never impacted our technical operations and the product was good.