Dew-Treadway reminds me of Jarron Jones. Tall, long arms similarly athletic. Not quite Tuitt but as Jones has become can be really good to great if coached right and motivated.
Tiassum is big boy much like a Daniel Cage. Don't need much there but the ability to hold position and eat blocks. BUT he's got a quick first step and can get in the backfield and cause problems.
Taylor played at Moeller so you know the competition was of the best. He seems to be more of a pass rusher with some stoutness. Can get by guys, uses his hands well but not great at beating a block. Will slant and get thru and make plays.
The thing with all these guys is you just need bodies. Then you look for talent.
You add these 3 to Day, Okwara, Rochell, Jones, Cage, Matuska, Mohkwua, Trumbetti, Blankenship and the depth gets much, much better.