Hi there.
Here are my thoughts on the list:
Asher-Really cool artsy yet outdoorsy simple manly but gentle name. Lots of good descriptors! That being said, I don’t like how it sounds w/Shields.
August-This isn’t as bad w/your ln, because at least it’s not a ‘sh’. [name_u]August[/name_u] is a great name. It’s actually similar to [name_u]Asher[/name_u] in the vibe it gives off, but even a little more classic. Cute nn options too. [name_u]August[/name_u] [name_u]Fox[/name_u] Shields has a lot of ‘s’ sounds, but not a deal breaker.
Axel-This doesn’t sound great w/the combo either, & the name is not my style in general. It just sound a little trying too hard.
Barrett-This is fine, but doesn’t do much for me. It just sounds a little bland, but the flow of [name_u]Barrett[/name_u] [name_u]Fox[/name_u] Shields sounds quite nice.
Beckett-This sounds good w/the combo as well, but I don’t know. I just don’t love the sound of it. [name_m]Even[/name_m] though the nn [name_u]Kit[/name_u] is adorable.
Bohdi-Meh, not my style. Not sure why, but Bohdi [name_u]Fox[/name_u] Shields sounds nice.
Bowie-Same as above.
Cade-I don’t love the flow of [name_u]Cade[/name_u] [name_u]Fox[/name_u] Shileds, but [name_u]Cade[/name_u] is a pretty cool name.
Cassidy-This is just too used for girls, I’d say. Maybe [name_m]Cassius[/name_m] or [name_m]Caspian[/name_m]?
Cian-Ooh, love it! Super unique but I don’t think too difficult? It’s kind of sporty yet gentle & just lovable.
Cole-[name_m]Cole[/name_m] [name_u]Fox[/name_u] is a little abrupt, but this is okay. I prefer it as a nn for [name_m]Nicolas[/name_m].
Declan-I love this name. It’s my nephew’s name, & he’s a nice little guy. Witty, goofy, sporty, & super sweet. [name_u]Declan[/name_u] [name_u]Fox[/name_u] Shileds sounds pretty good.
Finn-I love [name_u]Finn[/name_u]! [name_u]Finn[/name_u] Shields sounds great. [name_u]Finn[/name_u] [name_u]Fox[/name_u] Shields is a little off, but it’s fine. [name_u]Finn[/name_u] kind of gives me a similar vibe to [name_u]Declan[/name_u]. And it’s a little the same amount of popular.
Gable-I don’t love the sound of this for some reason. I like just [name_u]Gabriel[/name_u]. [name_u]Gabriel[/name_u] [name_u]Fox[/name_u] Shields sound quite nice.
Gunnar-Meh, I don’t like this. It just doesn’t sound that nice to me.
Greyson-This is super trendy & over done in my opinion.
Harley-I don’t love the sound of this either, & it’s very associated w/the motorcycle.
Holden-This is a nice name, & sounds good w/the combo. It’s one of those outdoorsy & masculine yet gentle thoughtful sounding names. Simple & not too popular.
Jasper-People seem to love this, but I can’t get into it. It just sounds goofy to me.
Jett-This is a little hard to take seriously too. [name_u]Jett[/name_u] [name_u]Fox[/name_u] Shields flows well.
Keir-Hm. I like [name_u]Kieran[/name_u] (really, [name_m]Ciaran[/name_m]), more. [name_m]Ciaran[/name_m] [name_u]Fox[/name_u] Shields is perfect.
Larson/Lawson-[name_m]Lawson[/name_m] sounds much nicer for some reason. [name_m]Lawson[/name_m] [name_u]Fox[/name_u] Shields is a bit essy, but not bad.
Mack-This is cute, but better as a nn. [name_u]Maverick[/name_u] [name_u]Fox[/name_u] Shields nn [name_u]Mack[/name_u] would be so cool!
Magnus-[name_f]My[/name_f] husband loves this name, but I can’t get into it. It’s okay…kind of cool & different.
Marlow-I think this may be used for girls a little too much.
Rafferty-Super cool & different. Especially w/the nn [name_u]Rafe[/name_u]. Sounds like a baseball player.
Remy-[name_u]Remy[/name_u] [name_u]Fox[/name_u] Shields sounds really nice. [name_u]Remy[/name_u] is very cute.
Rhett-This is fine. I like the combo flow, but [name_m]Rhett[/name_m] just doesn’t have that nice of a sound to me.
Ronan-This is my doggy nephew’s name! He’s a sweetheart, so I’m biased. But it’s a very handsome strong & kind name. It’s unique & simple, & [name_m]Ronan[/name_m] [name_u]Fox[/name_u] Shields flows perfectly.
Rowan/Rohan-I consider these very different. [name_u]Rohan[/name_u] is okay, but I really adore [name_u]Rowan[/name_u]. It’s like a slightly softer version of [name_m]Ronan[/name_m]. [name_m]Ronan[/name_m] is a bit more unique though, & [name_u]Rowan[/name_u] is used for girls sometimes.
Silas-This is way too much of a tongue twister w/your ln, even though it’s a great name in general.
Soren-I don’t mind this one. [name_m]Soren[/name_m] Shields kind of sounds like an indie movie star.
Torin-[name_m]Soren[/name_m] sounds way cooler for some reason.
Hope this helps. 
HELP!