Walker and Texas Ranger Bobby are by far the premo brother combo in the world.

Twins:
Trevor and Travis Rempe of Smith Center
Cameron and Zach Jesseph of Chanute (not sure if Zach's wrestling anymore)
Cody and Dilion Wildin of Marion

Older and younger siblings:
Cody and Alex Bontz of Wichita Independent

Not sure if they're brothers or not:
Josh and Jared Sanches of Shawnee Mission West
Jake and Josh Umscheid of Andover Central
Carlos and Deigo Galloway of Stockton
Kaenon and Landon Keiswetter of Norton
Austin and Bryce Hood of Louisburg
Boaz and Dalton Beard of Goddard
Clint and Travis Janzen Hesston
Nicholas and Darren Mueller of Hillsboro
Adam and David Petrie of Blue Valley Northwest
Clayton and Donovan Schamberger of Hoxie
Taite and Chase Nelson of Wichita Heights