William is very common but if you dont mind that its a very cute name also would make a very good middle name
Tristan is extremly cute love this name one of my favorites on your list
Logan is another cute name but common
Rowan is unique not to bad but im not sure if i like it just dont think it makes a very cute name
Charles is another one of those very common but still very cute names i like it
Everett is cute but not my favorite
Bastian or Seabastian I find both of these names to be very cute basitan is very uncommon and i love it
Blaise I just dont like that name
Demitri is just ok to me
Jacob might make for a good middle name
Some of my favorite boy names
Ezra
Zander
Ender
Christian
Ezekiel