Kinda tricky. Last time this came up, the consensus was that approximately nothing commercially available supported RVA23 at the time.

No. EXACTLY nothing. The RVA23 spec was ratified 11 months ago, today. There is zero reason to expect commercially available hardware in that time.

However there should be next year, and quite likely a couple of different choices by the time Ubuntu 26.04 LTS is officially released.

Waiting until 28.04 for RVA23-optimised code would be far too late.