I wanna add something when it comes to wep skill exceed. The reason why some weps with only 2 skills (exceed + something), may look enticing is that most newer players (at least 11 months because thats when i started), have few options due to missing almost all the old UEs.

However, imo (after planning 3 grids and almost completing 1 atm), bricking those 2 skill weps(exceed +1) is most likely not worth it, unless its a wep that fits your phantom wep and you'll be using it anyway. Best option for newer players is to get exceed off guardian weps as they're mostly pretty flexible and of course free (with farming). They can fit your grids easily and will hold you over for the next year till old UEs resurface.

Theres a bunch of weps you can add to OPs list also. A lot of the newer kamis have useful triple skill weps.