Shortlist for baby boy

My favourites from your list:
Henry
Sebastian
Conrad

Freddie - overused
Henry - ok
Milo - too current. Milky drink
Theodore - overused. I don't like it at all
Jack - overused but ok
Arlo - too current
Kit- too current
James- overused, but I really like it
Liam - only if irish.
Sebastian - popular. I don't like it at all
Grayson - Gracie for short? I don't like it at all
Leonardo - only if italian. Leo is ok
Julian - I don't like it at all
Orlando - a bit long. Lando is speeding up in popularity
Conrad - ok
Myles - I like Miles
Alfred - Will be Alfie or Freddie. Not keen.
Arthur - overpopular
Oscar - not keen

Cut Grayson and expand the diminutives to their full versions and this is a good list.

Julian is my favourite.

This is very similar to my name list (DS five weeks) so I have opinions!
Freddie - overused and not a full name
Henry - I like it but didn't go for it as no real nicknames and sounds a bit young as an adult
Milo - dog's name (sorry!)
Theodore - cute
Jack - lovely and underused now. Classic and simple
Arlo - a bit try hard/ off the moment
Kit - cute but would use the full Christopher and then shorten
James - lovely, similar thoughts to Jack but more formal (not a bad thing)
Liam - feels a bit 90s to me
Sebastian - I like this and the shortenings
Grayson - don't like, too American
Leonardo - too much, would Leonard be a possibility?
Julian - this is a nice underused classic. Similar vibe to Sebastian but less common
Orlando- as Leonardo
Conrad - nice, recognisable but uncommon
Myles - I would spell it Miles. I like it and not too common
Alfred- I'd go for this if you like Freddie. Quite a lot of Alfie/Freddie etc around though
Arthur- I like this
Oscar - this too