Meta released a UI set for speeding up UI-based MR/VR experiences.
Its really focused on using a set of pre-defined UI elements, rather than a self-developed style, but that should be very sensible for educational and industry focused projects.
The toolkit seems to be Canvas based, so in theory it should work with non Meta SDKs, but I havent seen any confirmation on that yet. Might give it a try to see how well it integrates with OpenXR / XRI.