You know, the “you should use it as a middle instead” names.
Some that spring to mind that I like are
[name_m]Wolf[/name_m]
[name_m]Fox[/name_m]
[name_u]Dove[/name_u]
[name_u]Love[/name_u]
[name_f]Snow[/name_f]
[name_f]Goldie[/name_f]
[name_u]River[/name_u]
[name_m]Fox[/name_m]
[name_m]Hawthorne[/name_m]
[name_m]Atticus[/name_m]
[name_m]Draven[/name_m]
[name_m]Lucifer[/name_m]
I also like [name_m]Fox[/name_m] in the middle, and [name_m]Apollo[/name_m].
For girls I’m crushing on Wildflower in the middle spot.
I like some of these for first names, but prefer them in the middle & would probably only use them in the middle myself!
[name_m]Wilder[/name_m]
[name_m]Fox[/name_m]
[name_u]Everest[/name_u]
[name_m]Jasper[/name_m]
[name_m]Sylvan[/name_m]
[name_m]Birch[/name_m]
[name_m]Evander[/name_m]
[name_u]Aspen[/name_u]
[name_f]Fern[/name_f]
[name_u]June[/name_u]
maurab listed two of my favorites: [name_m]Sylvan[/name_m] & [name_m]Evander[/name_m]! Others I might consider:
[name_m]Leander[/name_m]
[name_m]Idris[/name_m]
[name_m]Jove[/name_m]
[name_m]Rune[/name_m]
[name_m]Cyprian[/name_m]
Ruslan
[name_f]Tempest[/name_f]
[name_f]Thisbe[/name_f]
[name_f]Tallulah[/name_f]
[name_f]Ursula[/name_f]
[name_f]Isolde[/name_f]
Really I consider these mostly guilty pleasures or potential dog names, though!
I like [name_m]Fox[/name_m] too.
Girls:
[name_u]Cerulean[/name_u]
[name_f]Avigail[/name_f]
[name_f]Aurelie[/name_f]
[name_f]Sapphire[/name_f]
[name_f]Peridot[/name_f]
[name_f]Hyacinth[/name_f]
[name_u]Schuyler[/name_u]
Avonlea
[name_m]Jasper[/name_m]
[name_u]Sterling[/name_u]
[name_m]Quartz[/name_m]
[name_f]Marigold[/name_f]
[name_f]Charity[/name_f]
[name_f]Clarity[/name_f]
Kindred
Boys:
[name_u]Channing[/name_u]
[name_u]Schuyler[/name_u]
[name_u]Onyx[/name_u]
[name_m]Silvan[/name_m]
[name_m]Lynx[/name_m]
[name_m]Indio[/name_m]
[name_u]Indigo[/name_u]
[name_m]Quartz[/name_m]
[name_m]Chaplin[/name_m]
[name_u]West[/name_u]
I’m crushing on Lua, [name_f]Primavera[/name_f], [name_f]Lys[/name_f] or Lis, [name_f]Poppy[/name_f], Roussignol, [name_f]Ondine[/name_f] and [name_f]Zuzu[/name_f].
For boys: Azul, Maré, Viggo, Orion, Lazaro and Charlie, Chaplin or Carlitos
I like several of these as first names, but I’m not sure if I’d be brave enough to use them as a first.
Girls:
[name_f]Amaryllis[/name_f]
Avonlea
Darling
[name_u]Ever[/name_u]
[name_u]Hero[/name_u]
[name_f]Holiday[/name_f]
[name_u]Holland[/name_u]
[name_f]Iolani[/name_f]
[name_f]Leilani[/name_f]
[name_f]Magnolia[/name_f]
[name_f]Ora[/name_f]
[name_u]Truly[/name_u]
Boys:
[name_u]Carey[/name_u]
Copeland
[name_m]Fitzwilliam[/name_m]
[name_m]Huck[/name_m]
[name_f]Indy[/name_f]
[name_u]Jem[/name_u]
[name_m]Jett[/name_m]
[name_u]Poe[/name_u]
[name_m]Roland[/name_m]
Spade
[name_u]Amory[/name_u], but it’s my son’s middle, so I might be biased. 
Would have used it as his first if I could have.
My guilty pleasures tend to end up in the middle. But a few of these I’d still use as firsts.
Girls: [name_f]Snow[/name_f], [name_f]Moon[/name_f], Moonlight, Belladonna, Wildrose, [name_u]Winter[/name_u], Winterose/Winterrose, Pompeia, Nightingale, [name_u]Dove[/name_u], [name_f]Minuet[/name_f], [name_f]Lilac[/name_f], [name_f]Lavender[/name_f], [name_u]Love[/name_u], [name_f]Butterfly[/name_f].
Boy: [name_m]Sherlock[/name_m], [name_u]Sage[/name_u], [name_u]Blue[/name_u], [name_m]Wolf[/name_m], Valour, [name_m]Noble[/name_m], [name_m]Loyal[/name_m], [name_m]Valiant[/name_m], [name_m]Bravery[/name_m], [name_f]Rilian[/name_f], [name_u]Piper[/name_u].
For boys: [name_m]Amadeus[/name_m], [name_m]Anatoli[/name_m], Aureus, [name_u]Bellamy[/name_u], Enlil, [name_f]Enna[/name_f], [name_u]Ashley[/name_u], [name_u]Mackenzie[/name_u], [name_u]Madison[/name_u], [name_u]Frost[/name_u], Hodei, [name_m]Humphrey[/name_m], [name_m]Laszlo[/name_m], [name_m]Maggio[/name_m], [name_m]Malo[/name_m], Mokee, [name_m]Nicabar[/name_m], [name_m]Nicodemus[/name_m], Nox, [name_u]Penrose[/name_u], Sulo, [name_m]Ulysses[/name_m], Waitstill,
For girls: [name_u]Adair[/name_u], Airi, [name_f]Amaryllis[/name_f], [name_f]Arianell[/name_f], Aralouen, Brightly, [name_u]Calypso[/name_u], Chouko, [name_u]Dove[/name_u], [name_f]Dulce[/name_f], [name_u]Early[/name_u], Edelweiss, Fairly, [name_f]Haidee[/name_f], Maialen, [name_f]Marigold[/name_f], Poesie, Poema, [name_f]Reverie[/name_f], Soave, [name_f]Whisper[/name_f], Zoete, Zozesue,