There is a commercially available digital format/medium that has higher res than CD? Like, there are 96kHz discs being sold out there? And there are labels out there mastering and producing these discs? Sorry this is news to me! I thought 96kHz encodes were upsamples or homemade rips from analog formats.

Most hi-res audio is being sold as digital downloads. I don't think there's a currently-sold physical medium that contains digital data that's higher quality than a CD.

SACD (DSD format) is higher than CD but still not as high as 24/96k available on sites like Qobuz.

SACD, HD-Audio, Blu-Ray Audio.

I own music only discs in each of these formats. I think the last Blu-Ray Audio disk I bought (Yello Point Dolby Atmos release) was shipped in 2021.

Granted, they are fairly sparse. That disc was an import.

Yes, obviously, its called SACD and its a couple of decades old. Even DAT is better than cd, if you're only comparing sampling rate. https://en.m.wikipedia.org/wiki/Super_Audio_CD

Also DVD-Audio, https://en.m.wikipedia.org/wiki/DVD-Audio.

Aac on an SSD or on the internet?