First thought is trendy and made-up. Not at all my style. On second look I definitely don't like it. It's pretty in a insubstantial, superficial way.
Apparently it's an angel which leads me to think that, like
Gabriel,
Michael, etc as well as other Biblical names ending in -iel/-ael it will be male. That makes me dislike it even more and increases it's trendiness.
I would advise against it.
Middle names (I've looked at your name list):
Ambriel
TaylaAmbriel
DestinyAmbriel Saylor
Ambriel
PiperAmbriel Kristianna
Ambriel Oceana
Ambriel
HaileyAmbriel
BrookeAmbriel
JessicaAmbriel
MayaAmbriel
KatelynAmbriel
TrinityAmbriel
MakaylaAmbriel
KayleeAmbriel
MadisonAmbriel
BreannaAmbriel
RylieAmbriel
CheyenneAmbriel
ShelbyAmbriel
ElizabethAmbriel
RoseAmbriel
GraceAmbriel
MarieAmbriel
FaithAmbriel
LynnAmbriel
MaeAmbriel
MakenzieAmbriel
CadenceAmbriel
DakotaAmbriel
LeilaniAmbriel
EmmaAmbriel
IsabellaAmbriel
Sophia
Couldn't help but pair it with something trendy and/or filler-ish or overpopular. It just strikes me as one of those names.