Go! and Go are two different languages. Read the last section of the wikipedia page for Go! listed above for their objections against Google for picking that name.

I was going to add C++ to the list, but I see that it's listed as cpp.

It's lists c-- correctly, so I don't know why C++ would be any different.

I bet I blocked + because (I incorrectly thought) it was not a valid URL character.

Thank you! Added Go!, CAL, SPIR, Refer, and DokuWiki. Will add RuneScript, Vulkan and Ansible.