When a team doubles down on a position group in fairly rapid succession, and it does it a few times in one draft and not at the positions you most expected, it warrants further examination. We’ve already chronicled what NFL general managers and evaluators thought of the Ravens taking successive receivers in the third and fourth round (Ja’Kobi Lane and Elijah Sarratt)  over, say, a potential premium defensive tackle but tight end was arguably even more of a weakness heading into the draft and they grabbed two of them later in the process. And they did it again in a cluster (two out of a possible three picks from round four into round five). And, once again, there is reason to believe, as was the case with the receivers and has been the case traditionally when the Ravens double down, the second player taken at tight end might make more of an impact than the first .…