[name_m]Rooney[/name_m] gray or [name_u]Lennon[/name_u] [name_u]Gray[/name_u] for a girl?!
They both sound very masculine to me but I suppose I prefer [name_m]Rooney[/name_m]
Sorry, I dislike both.
I agree with the “very masculine”, but…
2015 Name Ranking in the USA:
[name_m]Rooney[/name_m] - BOY: not listed
[name_m]Rooney[/name_m] - GIRL: not listed
[name_u]Lennon[/name_u] - BOY: #609
[name_u]Lennon[/name_u] - GIRL: #516
When I hear [name_m]Rooney[/name_m], I think about [name_m]George[/name_m] [name_m]Clooney[/name_m] instead of [name_m]Rooney[/name_m] [name_f]Mara[/name_f], so it’s difficult for me to see it as a girl name. Therefore, my favorite is [name_u]Lennon[/name_u], not because of it’s bigger popularity for girls, but because of the nickname [name_f]Leni[/name_f] which is versatile and feminine.
I quite like [name_u]Lennox[/name_u] nn [name_f]Leni[/name_f] for a girl as well, but only because the only one I know is a female ([name_u]Lennox[/name_u] - BOY: #488; [name_u]Lennox[/name_u] - GIRL: #740).
IDEAS:
[name_u]Logan[/name_u] (BOY - #14; GIRL - #394) nn [name_f]Lola[/name_f]
[name_u]Holland[/name_u] (BOY - not listed; GIRL - #845) nn [name_f]Holly[/name_f]
[name_m]Callahan[/name_m] (BOY - not listed; GIRL - not listed) nn [name_f]Calla[/name_f], [name_f]Callie[/name_f]
[name_u]Murphy[/name_u] (BOY - not listed; GIRL - not listed)
[name_u]Sloane[/name_u] (BOY - not listed; GIRL - #327 [[name_u]Sloan[/name_u] is #699])
[name_u]Finley[/name_u] (BOY - #326; GIRL - #204)
[name_u]Sullivan[/name_u] (BOY - #459; GIRL - not listed)
[name_u]Sheridan[/name_u] (BOY - not listed; GIRL - #845 in 2000, #777 in 2001 and #983 in 2002) nn [name_f]Sher[/name_f], [name_f]Sherry[/name_f]
[name_u]Madigan[/name_u] (BOY - not listed; GIRL - not listed) nn [name_f]Maddie[/name_f] (or not)
[name_u]Connolly[/name_u] (BOY - not listed; GIRL - not listed) nn [name_u]Connie[/name_u]
[name_u]Kennedy[/name_u] (BOY - #996 in 2005 LAST LISTED; GIRL - #57)
[name_u]Reagan[/name_u] (BOY - #991; GIRL - #99)
[name_u]Carter[/name_u] (BOY - #24; GIRL - #553) / [name_u]Karter[/name_u] (BOY - #183; GIRL - #689)
[name_u]Parker[/name_u] (BOY - #72; GIRL - #227)
[name_m]Grayson[/name_m] (BOY - #47; GIRL - not listed) nn [name_f]Grace[/name_f], [name_f]Gracie[/name_f], [name_u]Gray[/name_u] [but not with mn [name_u]Gray[/name_u]]
[name_f]Gracen[/name_f] (BOY - not listed; GIRL - not listed) nn [name_f]Grace[/name_f], [name_f]Gracie[/name_f], [name_u]Gray[/name_u] [but not with mn [name_u]Gray[/name_u]]
[name_u]Dylan[/name_u] (BOY - #27; GIRL - #397)
[name_u]Hunter[/name_u] (BOY - #41; GIRL - #786)
[name_u]Ryan[/name_u] (BOY - #39; GIRL - #474)
[name_u]Rylan[/name_u] (BOY - #241; GIRL - #877)
[name_u]Blake[/name_u] (BOY - #96; GIRL - #423, while [name_u]Blakely[/name_u] is #354)
[name_u]Morgan[/name_u] (BOY - #674; GIRL - #120)
[name_u]Tyler[/name_u] (BOY - #81; GIRL - #875 in 2007 LAST LISTED) nn [name_m]Ty[/name_m], [name_u]Tai[/name_u]
Of the 2, I prefer [name_u]Lennon[/name_u]. Nn [name_f]Leni[/name_f].
[name_m]Rooney[/name_m] is cute 
[name_u]Love[/name_u] [name_u]Lennon[/name_u]! It’s on my list too! I prefer to spell it [name_m]Lennyn[/name_m] but either way it gets my vote!
I also prefer [name_u]Lennon[/name_u]. I like [name_m]Rooney[/name_m] but I think [name_u]Lennon[/name_u] is more wearable.
In general I lean toward [name_u]Lennon[/name_u], but with the middle name, [name_m]Rooney[/name_m] [name_u]Gray[/name_u] tips the scale for my vote.
I love [name_u]Lennon[/name_u] [name_u]Gray[/name_u]! Unisex names are great, and I think this one would wear handsomely on anyone!
I have never heard [name_m]Rooney[/name_m] before, and there just is something about it I find off-putting. It might be the double O’s.
I love [name_m]Rooney[/name_m] [name_u]Gray[/name_u]!
[name_m]Rooney[/name_m] [name_u]Gray[/name_u]! Adorable…
I prefer [name_m]Rooney[/name_m] [name_u]Gray[/name_u]. [name_u]Lennon[/name_u] [name_u]Gray[/name_u] sounds like you’re talking about gray linens.
I love [name_m]Rooney[/name_m] [name_u]Gray[/name_u]! I think that maybe a more feminine middle name would balance it better, but regardless, a lovely name
I dislike both, sorry. They sound very masculine and not gracious on a girl in my opinion. But I’d go with [name_u]Lennon[/name_u] if I had to choose one.
I don’t know where you got the stats, but [name_m]Callahan[/name_m] is ranked #1,795 for boys and #5,120 for girls.
[name_u]Murphy[/name_u] is #1,225 for boys and #2,169 for girls.
[name_f]Gracen[/name_f] is ranked #1,993 for boys.
[name_u]Sloane[/name_u] had been listed for boys once (like a few years ago).
I did not have time to check for the others, but pretty sure [name_u]Madigan[/name_u] is ranked for girls.
Can’t say I’m a fan of either, but [name_u]Lennon[/name_u] is a bit better than [name_m]Rooney[/name_m].
I’m in favor of choosing a name you love, so ultimately, go with that. But you asked for opinions, so…
I agree that neither name sounds particularly feminine. [name_u]Lennon[/name_u] brings to mind the dictator, [name_m]Rooney[/name_m], an Irish pub. I guess if you wanted [name_u]Lennon[/name_u], you could call her Nonny/Noni. If you went with [name_m]Rooney[/name_m], you could use Roo/[name_u]Rue[/name_u].