Having seen Newsome, Cooper, Phillips, and Outlow here my thoughts on this talented group.
1. Newsome - He's the total package. Although he's only 5'8,180, he has the frame to play at 190-195. He certainly plays bigger then his size. He can break tackles at the LOS and can run inside or out. He's has great feet and fluid hips. He is the best of the group at planting and changing direction very quickly. He stays very low in and out of cuts and is very good at setting up blocks. He is a very patient runner with good vision. He won't bounce out of the hole, if the hole doesn't open. He will take what a defense gives, very rarely loses yards. He will ride his linemen until he sees a seam he can get through. His lack of height helps him hide from defenders, allowing him to set up his blocks. He's very hard to square up in the hole because he sees the field so well. He doesn't have the straight line speed of Cooper or Outlow but he runs a sub 4.5, so he's fast enough. He also has very good hands and experience playing WR, so he's a threat in the pass game as well. He can play some slot to create mismatches.
2. Outlow - He's a physical, between the tackles, back. At 6', 190, he has the best size in the group and can likely play at 200-205. He's has the ability to out-run defenders to the edge. However, he doesn't get in and out of cuts quickly. He's a one move and done runner. He reminds me of DeAngelo Berry from Xavier. Very strong, very fast. North/South runner. Can catch the ball but primarily from the backfield.
3. Cooper - Easily the smallest and fastest of the group, but probably the strongest. He is a smaller version of Maurice Jones-Drew. He's built like a tank. He can run inside and out but lacks good patience. He will look to bounce, if the holes not there right away. If he gets to the second level, he's gone. Has a low center of gravity making him very difficult to tackle. Shows some shiftiness, will make defenders miss but usually will try to outrun them to the edge first. He's the least comfortable catching the ball but is good in the screen game. His speed is unmatched.
4. Phillips - He's the most versitile of the group, more of an athlete then a RB. He's just a playmaker. He has a knack for making something out of nothing. He's very shifty and very hard to tackle in the open field. He lacks the speed of the others, but is dangerous as a runner or receiver. He's also very slight, not a between the tackles runner. He won't take 3 yards, he'll dance at the LOS looking for the big play. I don't think he'll be recruited as a RB. He'll either be an ATH or a DB.
They will all need to become better pass blockers at the next level. They really aren't asked to do it much at the HS level.