One of the best matches for the type of linebacker that Joseph covets is Kenneth Murray.
Murray tested out incredibly well at 6-2 241lbs and combined with his work at Oklahoma had quite an array of comps come out of it.
For Murray, the high end is tough. Very few players over 240lbs test as well as Murray did. However, there is one that was very good for a long time that makes sense in Jamie Collins. If you are willing to take the weight down just a bit to 235lbs, which is still within the Joseph requirements, is DeMeco Ryans.