What makes a name holy is symmetrical-ity, not resemblance to the names of the Heralds. Since it is considered near-blasphemy to give someone an actual holy name (unless it is an honorific given by the church as in the case of "Nohadon") then parents generally change a single letter, so that it is one step away from holy (Shallash -> Shallan). This is why Vorin's refer to the heralds by different names (Jezerezeh instead of Jezrien, Nalan instead of Nale, etc) With the suffixes some use Herald names as a base (as in the case of Kaladin) but they aren't necessary. We really don't know enough about what the suffixes mean to say more.