Need help with baby names?

i have a two year old girl who's name is samaura jo (starts with an s because her dads name is shawn middle name jo bc her dads is joseph) we call her mauri we also have a 10 month girl named elayna ann ( starts with an e bc my name is elisabeth and my middle is ann) we call her Layni we have no idea what we will name our next kid if its a girl it needs to end in an a and be able to be shortened like her sisters and preferably three syllables lol and for a boy were at a loss I love the name keegan but dad does not also i feel the name has to hae something Special sense our first two are named after us help!