None are too bad, except:
Casey and
Corey (twin girls)
Edward and Hazen (twin boys) - seriously, Hazen? That sounds like a verb a drunk frat boy would slur out while hazing the newbies.
Abby and
AllyJohn and
JustinJonathon and
JustinAaron and
AdamRachael and
RebeccahNathan and
Nicholas- can you guess what twinny naming practice I dislikE?
ArcadiaIt's just an object. It doesn't mean what you think