Langrisser/War Song part one for the genesis was the only u.s release,beside part II having a fan translation that's it.While the rest of the series did remain japan exclusive.Interesting enough though langrisser 1&2 got a remake for switch and it's coming to the u.s next year but i don't know if that will give the series more exposure.

https://www.youtube.com/watch?v=ZTv3-X69Sew