Many of these sound really good together! I think my favs after saying them out loud are [name_u]Elias[/name_u] [name_m]David[/name_m] and [name_u]Elias[/name_u] [name_m]Gregory[/name_m]! I have a [name_m]Julian[/name_m] [name_u]Elias[/name_u] myself, great name!
I like the sound of all of these together, but I personally love [name_u]Elias[/name_u] [name_m]Benjamin[/name_m] and [name_u]Elias[/name_u] [name_m]Gregory[/name_m]!!
From your list, I like [name_u]Elias[/name_u] [name_m]Benjamin[/name_m], [name_u]Elias[/name_u] [name_m]Gregory[/name_m], [name_u]Elias[/name_u] [name_m]Matthew[/name_m], and [name_u]Elias[/name_u] [name_m]Mitchel[/name_m]!