I think so far, of the mentioned, my first favourite would be "simply standing" and 2nd being "simply stated".
Another, I thought could be "simply here" ?
Or you can create a completely different theme,leaving out the "simply" or "simon" ?
Like someone mentioned, a favorite animal?
How about a time of year,colour, or something found in nature?
This can be fun, deciding on a new username.
Enjoy.