On Java, the nether brick sound applies to nether brick blocks, slabs, and stairs, red nether brick blocks, slabs, and stairs, nether brick walls, nether brick fences, cracked nether bricks, and chiseled nether bricks.

On Bedrock, however, it only applies to the standard nether brick blocks and red nether brick blocks and their stair counterparts.

You can easily test this yourself if you have both versions.