The NSX-T Data Center Plugin for OpenStack support is implemented as a Neutron plugin. The VMware NSX plugin class used when configuring Neutron depends on the version of NSX you are using.

Supported Hypervisor versions for vSphere and KVM (Ubuntu, Red Hat Enterprise Linux, CentOS...) are listed in the NSX-T Data Center Installation Guide.

The NSX-T Data Center Plugin for OpenStack has the following specific requirements regarding compatible OpenStack software versions.
OpenStack Distribution for NSX-T Policy Plugin Version
Open Source Edition Stein
OpenStack Distribution for NSX-T Manager Plugin Version
Open Source Edition Rocky
Open Source Edition Stein
Red Hat OpenStack Platform Red Hat OpenStack Version 13 with the associated version of Red Hat Enterprise Linux.