Hardware

I go to https://www.amd.com/en/products/specifications/processors.html quite often, as I can filter on any CPU specification and pull up the technical details I need right away.

For the AI 365, https://www.amd.com/en/products/processors/laptop/ryzen/300-series/amd-ryzen-ai-9-365.html, AMD specifically lists Ubuntu and Red Hat as supported.

Ryzen 8000-series, https://www.amd.com/en/products/processors/laptop/ryzen/8000-series/amd-ryzen-7-8840hs.html, same story.

So, to actually answer your question, I think going with the AI 300 series might be a little premature. I tend to wait a generation, sometimes two, before adopting a new architecture or CPU model. There's just no telling what bugs need to be ironed out, what lessons were learned in the fabrication/design process, and so on.

The Ryzen 8000 series is built on a stable, time-tested platform. I would go with that, unless you are the adventurous type.

Ryzen 9000 and AI 300 are Zen 5, 8840 is Zen 4.

There is also generally no connection between the name of the model and actual hardware generation, AMD is known to sell old CPUs under new names (yes they are scummy like that). For example Ryzen 7000 can be Zen 4, Zen 3 or even Zen 2. You need to look up specific model name to learn what CPU core it has. So far though Ryzen 9000 and Ryzen AI are all Zen 5.