Which exact Sonos models are considered "related" for surround purposes?

Hello all,

At https://support.sonos.com/en-us/article/surround-sound-guidelines-and-limitations there is the statement “related models like One and One SL can be used together as surround speakers” without specifying which exact models are related.

From that article, and searching through the forums, it appears to me that the following two sets of models are considered related, that is, you can mix them together for surround:

One (Gen 2), One (Gen 1), One SL (rev 1 and 2)

(forums seem to suggest Gen 1 and Gen 2 can be mixed, and article says One SL is related)

SYMFONISK Floor Lamp, SYMFONISK Table Lamp (Gen 2)

(explicitly noted in footnote 2 of the article)

SYMFONISK Bookshelf (Gen 1), SYMFONISK Bookshelf (Gen 2)

(not sure of this; basing this on forum reports that you can stereo pair them)

Not related for surround purposes, despite having the same speaker hardware (basing this on forum reports that you can’t stereo pair them):

Play:5 (Gen 2), Five

Is this correct? Any errors Are there any other “related” models, or is this the complete story?

Thanks,

Ivan.