I love [name_m]Florian[/name_m], [name_m]Finnick[/name_m] and [name_m]Flynn[/name_m]
[name_m]Foster[/name_m] makes me think of fostering children and also the beer/lager company, so not a fan.
[name_m]Forest[/name_m] is ok, I’m usually a fan of nature names, but I guess [name_m]Forrest[/name_m] Gump puts me off [name_m]Forest[/name_m].
Finnie is ok, but [name_m]Finn[/name_m] names in the UK were so heavily over-popular a few years ago that I’m not enamoured by them but I do really like [name_m]Finnian[/name_m], [name_m]Finnegan[/name_m] and [name_m]Finch[/name_m] with Finnie as a nickname.
[name_m]Franklin[/name_m] feels really old man namey to me. Like [name_m]Franklin[/name_m] [name_m]Roosevelt[/name_m] and [name_m]Franklin[/name_m] [name_m]Graham[/name_m].
[name_m]Fergus[/name_m] could be cute…i have a negative personal association but I can see myself liking it if I met someone else with the name.
[name_m]Fraser[/name_m] is ok - but again another brand association - House of [name_m]Fraser[/name_m].
I like [name_m]Felix[/name_m] but i’m a bigger fan of the female variants so it’s not on my list, but it’s a lovely name.
[name_m]Fender[/name_m] - like the guitar?
[name_m]Franco[/name_m] - dictator 
[name_m]Fisher[/name_m] - I think I’m just not big on surname names. If that’s your thing cool, but surnames also tend to be brands and I can’t get them out of my head when I hear the name.
I hope that wasn’t too negative. I do really like [name_m]Florian[/name_m], [name_m]Finnick[/name_m], [name_m]Flynn[/name_m] and [name_m]Felix[/name_m]. Of your surname names [name_m]Fraser[/name_m] would be my favourite.