From the pictures these everything looks good and I do believe these are authentic but I would like to see more pictures to be sure. I compared them to my retail AHE's and the swoosh placement looks right, Text placement on the sides looks good, The 'NIKE' on the suede looks correctly placed, Text placement on the laces is right, and toe box looks the right shape.
Could you include pictures of the right shoe for the AHE and pictures of the left shoe for the Grim Reapers, and also pictures of the extra pairs of white and teal laces?
You may not get a 2nd opinion on here so I would recommend posting them on the subreddit r/Repsneakers and asking help from user u/anon3212