Okay. I listen to a lot of non-classical music too and I have zero non-classical SACDs.
I have dozens and dozens or rock and jazz and country SACDs. SACD was primarily a format for people with multichannel speaker setups. The reason that many releases were classical was because several classical labels started recording everything in 5.1. But there were still lots of other kinds of music on the format too.
There was also DVD and DVD-A. DVD-A is probably the most esoteric format of all of them, but there are still releases being put out in DVD-A. The advantage is that you can play multichannel like a standard DVD too. All of Steven Wilson's multichannel remixes (Jethro Tull, Marillion, Yes, XTC, etc.) are in DVD-A. King Crimson does DVD-A too, and they put out lots of multichannel collections.
Advantages of various formats:
CD: ubiquitous, audibly transparent, stereo
Dolby CD: multichannel (matrixed), compatible with regular CD players in stereo
SACD: HD audio, same footprint as CD, multichannel, compatible with CD in stereo
DVD: multichannel, lossy audio, video, fully compatible with all DVD players
DVD-A: Lossless/HD audio, multichannel, same footprint as video DVDs, SD video, compatible in lossy with DVD players
Blu-Ray: HD-MA audio, HD video, Atmos, same footprint as DVDs and video blu-rays, fully compatible with all Blu-ray Players
4K: Same as blu-ray except with 4k video, not compatible with blu-ray but most come with a Blu-ray Disc.