I actually really like [name_m]Barrett[/name_m], but personally I do think it’s a little too close to [name_m]Bennett[/name_m]. They have the same rhythm, both start with “B,” and end with “-ett,” so I could definitely see people mixing them up at family gatherings.
From your list, my favourites with [name_m]Micah[/name_m] are [name_m]Grant[/name_m], [name_m]Wyatt[/name_m], and [name_m]Sawyer[/name_m]. They all feel familiar without being overly common, and they complement [name_m]Micah[/name_m] nicely without sounding matchy.
Some more ideas you might like:
[name_m]Graham[/name_m], [name_m]Calvin[/name_m], [name_m]Beckham[/name_m], [name_m]Reece[/name_m], [name_m]Dean[/name_m], [name_m]Ellis[/name_m], [name_m]Walker[/name_m], [name_m]Knox[/name_m], [name_m]Cooper[/name_m], [name_m]Levi[/name_m], [name_m]Nash[/name_m], [name_m]Fletcher[/name_m], [name_m]Adler[/name_m], [name_m]Carter[/name_m], [name_m]Jasper[/name_m], [name_m]Jude[/name_m], [name_m]Jonas[/name_m], [name_m]Hudson[/name_m], [name_m]Weston[/name_m], [name_m]Bryce[/name_m], [name_m]Camden[/name_m], [name_m]Greyson[/name_m], [name_m]Evan[/name_m], [name_m]Christian[/name_m], [name_m]Nathan[/name_m]
[name_f]Hope[/name_f] this helps!