我叫李雨晨,拜托各位给咱起个英文名字吧！真的很需要啊,我表哥叫李昊,也顺便帮下忙,谢谢！

Rachel
Henry

Rainer Li
or
Ellison Li

1 Rainnie for you，quite special i like it so.
2 And basically there's no specific meaning of 昊 ,so i suggest
you may just choose one from the 'boys names list' online for him.
Best wishes xxx

Richi