Luca seems to be a pretty pan-European name in terms of familiarity and usage - it appears on both the popularity charts for Italy and Netherlands and would work well in English speaking countries.
Other names that appear on both lists:
LiamDavid/e
AlexanderElia/s
BrunoMartinMattia/Mattias/Mathias
LeoDanielChristian/Cristian
Sebastian/o