His elite prospects page is here.
In 2021-2022 he was nearly a 1ppg player in the USHL, plus kept that up with 8 points in 9 playoff games. FC Hockey has this note:
I think this matches what we heard on many of the other players drafted about using their bodies to shield and protect the puck to maintain possession.Mehlenbacher is a big-bodied, power forward who’s work ethic allows him to impact the game in multiple situations. His size and strength comes into play in so many different aspects of the game. He was really effective in the face-off circle, using his stick and his body to tie up the opposing center and win the puck back.
If you find any gameplay clips or scoring videos, please post them here. Thanks!