Okay, so:
The All-In-One GUI doesn't give you any bans as long as you turn your Wii U off after using a hack like Changing your rank, level, weapons you have, etc. ( If you used something like OctoHax; you can stay online. )
GeckoMapTester bans if the other player in the lobby aren't synced up ( meaning they don't have MapTester, or they're not using it, etc. ) which results in a ban.
SplatHax is safe, just turn off your Wii U after editing your gear.
DojoHax is safe, turn off your Wii U after using it.
MusicRandomizer is good, no bans...
OctoSFX I'm not so sure, I haven't used it myself.
And Colorizer is safe now since you can't go online with it. ( using it in Octo Valley, The Testing Range, etc is safe. )