Two other middle linebacker options besides Zaven Collins at 28: Jayson Oweh and Joseph Ossai

I can see Oweh as an OLB in a 3-4 scheme, but asking him to play LB in a 4-3 or any scheme where he would have to cover someone is asking him to fail. If all you needed was athletic ability to be a great LB then we would have had many (Martez Wilson, Anthony, Cie Grant, etc) but it actually takes smarts, being able to read and anticipate, & coverage ability. If we draft him he will most likely be an Edge Rusher, we don’t need projects in the 1st and 2nd rounds.
For Starters look at the difference between the players.

Oweh has much better Change of direction as evidenced by his 3 cone.

Unlike All 3 players you mentioned Oweh had a sub 7.00 3 cone.

He's also Bigger and faster than all of them.