I tried both "Latest"(forge 1.12.1 - 14.22.1.2485) and "Recommended"(forge 1.12.1 - 14.22.1.2478) versions. But I couldn't create a new profile with any of them.
(https://files.minecraftforge.net/net/minecraftforge/forge/index_1.12.1.html)
I know that the old forge versions don't show up where they should, for example I have Forge 1.8.9 that appears at the end of the list.
But the 1.12.1 don't show up ANYWHERE.