I love all of these!
Xenon is a personal favorite of mine. I think it's extremely underrated. It just sounds so COOL!
Noble gases are some of the coolest periodic table elements, and science in general is fascinating and a great source of names.
Xavier is one of my favorite boy names. It has the popularity it deserves.
Xander is a shorter, modern twist on the classic
Alexander, and I simply love names that start with X.