I'm predicting there may a somewhat negative response, but......
Im a huge titanorak (fan of the titanic).
Thomas Andrews was the chief designer of the titanic but he was known as "Tommie" to everyone.
What do you think of using Tommie for a name?
I don't like using longer names with a nickname and I dislike Thomas.
The other name I like is Jacob. So maybe Tommie Jacob or Jacob Tommie.