I did not realize this was a thing until I just switched to AZERTY which… despite being marketed as being “similar” to QWERTY, is still tripping me up
Edit: since this came up twice: I’m switching since I’m relocating to the French-speaking part of the world & I just happened to want to learn the language/culture, so yeah
For Chinese (10 key) and Japanese (kana)I use a 3x3 on my phone. Very common for Japanese but difficult to learn, maybe less common in Chinese over standard qwerty.