None of your listed jobs can obtain the requisite skill AT the requisite level, that is why they are not included. It doesn't matter that they can obtain it with merits or at a later level.

All those jobs skill in a weapon is low enough that they shouldn't ever be using those weapons unless a special situation (e.g. procs, and the new weapon skills wont likely be added as procs to existing content) requires it. Thus, even in those situations, the jobs do not need these WS.