Oh, fun!
Here are my thoughts-
Howard-I don’t see why this wouldn’t work. I’m not a huge fan. I guess it just feels a little dated, & I feel like [name_m]Howie[/name_m] is sort of…dopey for lack of a better word. But it’s not horrible offensive. A perfectly nice normal name.
Cecil-I don’t know. I guess it’s usable. I just don’t like it. It sounds kind of evil.
Woodrow-This sounds too much like a last name. And I can see [name_m]Woody[/name_m] being a cute nn, but also way too much teasing potential.
Grady-I kind of see this as feeling more modern. Didn’t realize that it was popular in the 20s. I think it’s cute & sporty.
Harold-Same thing w/Howard. It totally works. [name_m]Just[/name_m] feels a bit clunky & dated, but not too much.
Hubert-Meh, this one is almost too geeky. [name_m]Even[/name_m] though I love [name_m]Albert[/name_m].
Homer-I don’t know. That Simpsons reference is pretty strong.
Troy-Meh, it feels more 70s/80s to me. Kind of like a jerky football player guy. I don’t know why.
Morris-That’s kind of cute. I like it for a cat! But I think it’d be fine on a human. Totally doable.
Sylvester-Ha, another cat name! This might be just too geeky.
Lloyd-This I like. It might be the ‘[name_m]Say[/name_m] Anything’ association though. 
Alton-It’s fine. I don’t love the sound, but it works okay.
Mose-Seems like it’s missing the ‘s’. [name_u]Or[/name_u] sounds like [name_m]Moose[/name_m].
Olen-I’ve never even heard of this, but it’s pretty nice!
Hollis-That’s getting oddly popular for girls now a days. I feel like it’s too masculine for a girl & too feminine for a boy.
Sterling-That feels totally modern to me. I want to like it, but can’t get into it. It’s interesting though.
Golden-Nah, that one feels kind of weird.
Newton-It’s doable. [name_m]Just[/name_m] sounds a little dorky. But not bad.