How many holdbacks do BLC, VLC and Next Level have that they need to combine to form a WSYL team?
As with the Hawks, or any team, nobody knows how many holdbacks a team actually has. But my guess is that the 2026 VLC and NextLevel teams have few or zero holdbacks, and BLC probably has more, due to the fact that BLC tends to get players from Mater Dei, a school that encourages/allows athletes to repeat a year.
If I am wrong about any of those three teams, I am sure a parent from that team will chime in.
But the implication of your question is wrong - those programs are not joining forces to plug holdback holes, but rather because they do not enough elite level players to fill a 25 man roster. Very few teams do.