This has been somewhat confusing to me as well. On the Eastern press release for the CMU game it states:

"The game will serve as Eastern's Senior Day, where the program will honor the 2022 Senior Class. Brandon Benson, Hassan Beydoun, Blake Bogan, Jordan Crawford, Dylan Drummond, Michael Foor, Gunnar Oakes, Taylor Powell, Jose Ramirez, Sidy Sow, Tariq Speights, Grant Trueman, Russell Vaden, and Jalen Weathers will take part in the festivities with their families."

I would assume that means the guys not listed are planning to come back. One thing that stood out to me is that Sparacio is not listed. I know Kline has another year but I thought Joe was a one and done. He graduated high school in 2018 and it looks like he didn't play that fall at BC, meaning a probable redshirt. His career break down is:

2018: True freshman
2019: RS freshman
2020: RS sophomore
2021: RS sophomore redo
2022: RS junior
2023: RS senior

So it does appear he'll be back next year, which is great! It also means that Sow is the only O-lineman that will be gone, which is obviously a huge loss but nice to have most of those guys back.

EDIT: I looked it up and Sparacio played in three games at BC as a true freshman, meaning he would have been eligible for a redshirt.