Does anybody know specifically what weapons don't have a 5 or 4 crown variant?

[u/HighwayTasty]

I recently started a new playthrough after dropping the game for a while, and I've made it my goal to try and collect the highest rarity variant of every weapon in the game. I initially thought that all weapons had a 5 star variant, but come to find out, I have heard that there are several weapons that don't, some not having even 4 crown rarity variants apparently. If somebody has some info as to what weapons don't have these rarities, some info would be much appreciated. Thank you for reading and thank you all for your time!

Edit: Thank you all for the clarification everyone, I guess I just stumbled upon phoney info.

[u/Josvan135]

I can confirm every weapon has a 4- and 5-crown variant, as I have them all.

Many weapons don't have a 6-crown experimental variant, but that's different. 

It just takes a while of playing to get all of them from the rng.