In the 1.18 experimental snapshots, those other strips generated. However 21w37a did not include those and did not mention them at all in the changelog. This seems like a strange decision, as unlike the mob spawning based on block height and elytra changes, the stone strips did not receive any criticism.
Expected Result
The strips of Granite, Diorite & Andesite would generate on Stone Shores & Stony Peaks
I am also able to confirm that this is an issue.
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