My familiarity with ND as a fan and due to living just outside South Bend here's a few guys at ND to keep eye on:
Eichenberg LT - He could have easily been drafted last year, but chose to return. Every LT under Kelly has become a top 20 pick...so he could end up being out of reach for us, but I suspect he might be the first to make it past that. I could easily see a world where this is our LT of the future.
Jeremiah Owusu-Koramoah Hybrid LB - I'm telling you right now, this is what I'd describe as a poor man's Isaiah Simmons - any DC would smile to have his name called and trust me fans should you hear it called you should smile as well. He could elect to return as he has elgibility left, but I'm predicting he declares. He's only 6'1' and around 220, but his frame is capable of more and he fits the smaller hybrid LB we are seeing more and more of.
Daelin Hayes, DE (Sr., 6-4, 270) - I list his size first because folks he DOES not look like he is 270, but trust me he is. I love Hayes, but not unrealistic in realizing he won't be in top tier discussion at edge guys this next year most likely, but may sneak onto a few draft lists as one. He is right there next to top tier. This is mostly due to him having to play behind Khalid Kareem and Julian Okwara for years, then a torn labrum in 2019. 2020 if he stays healthy, he's going to catch eyes! His medicals and more of unknowns, I realistically see him as a later Day 2 or early Day 3 guy to circle and highlight.
Ben Skowronek WR - What GB draft discussion wouldn't include a flier on a WR. Skowronek was a guy many had as a draftable WR in 2020, but instead chose the transfer portal and headed to ND. 6-2 220 he is the type of WR Gute likes, and I think with his apparent regression (still plenty of season to turn it) after leaving Northwestern he is a Day 3/UDFA type guy to keep an eye on.
Tommy Kraemer OT (Day 2) - He is like Zack Martin was, tackle in college, projects as a guard and a DANG good one. IF we have any inkling that Jenkins could end up at one of our tackle positions, Kraemer is a guy that I see going in the second round that could instantly slide to Guard out the gate...if he goes past the 3rd round teams are dumb.