Matthew and
Thaddeus are good...
Prosper seems odd as a name... same category as Apple imo.
Here are some names to play with and mix and match with these... (some may work better as fns with the ones you've mentioned as mns)
JosiahBenjaminRaphaelLarsTobiasSebastianGavrielArielXavierJadon would work as a mn w/
Prosper if you're set on using that as a name... (as long as it's spelt
Jadon)
DakotaDarrylIanCaedmonCurtisAaronCharlesElijahFritzAbrahamJudahIsaacPascalLeviBlakeBryceBrent
Could add some Jpns. names if you so request.