I think Wiebe is probably the most likely departure, followed by Livanavage. Verhoeff will depend a lot on who drafts him and how pro ready he looks in the second half. Right now he looks like he needs another year, but that could change fast. I imagine Emery will play one more year to keep rounding out his offensive game, but you never know. Jubenvill is probably gone to the portal unless he starts seeing more playing time.
Let's just assume Wiebe and Livanavage go pro and Jubenvill hits the portal. Then your d-core for next year looks like this right now:
Laurila-Verhoeff
MacKenzie-Emery
Strathmann-Lindberg
Extras: Engel, ?, ?
If they added two of the names mentioned above, it would be a very talented group, but also a pretty young and inexperienced one. I wonder if they would look at adding only one more freshman recruit and then getting a vet out of the portal to balance things out.