When using the /give command, you can't find the cobblestone stairs in the items list that shows up but you can find all other types of stairs.

Steps to reproduce:
1.Type /give @s in chat
2.Type "stairs" or "cobblestone"
Observed results
You will find mossy_cobblestone_stairs in the ID list, but not cobblestone_stairs
Expected results:
You would find cobblestone_stairs in the ID list and then you would be able to give it to yourself.