For a trope with a metasyntactical variable in its name, there's not much variance between the examples -- they're all "Here's Johnny". If it's as commonly used for other names as claimed, surely there should be an easy one to find and include in the examples list.
If not, I suggest this be renamed to "Here's Johnny", as that's clearly a trope entirely on its own, as the Know Your Meme page on it demonstrates.