Any Huawei phone should work.
Strictly speaking, the charging rate can be downward compatible but not upward compatible, which is determined by the hardware, so the 66w fast charge can be downward compatible with 40w, 22.5w, and 18w charging rates. For example, P40, the maximum support 40w fast charge, you can also use Huawei's 66w charger, but because the maximum support only 40w, so the actual charging speed is still 40w.
In general, all models of Huawei mobile phones with 66w power can use 66w super fast charging. Any Huawei mobile phone with less than 66 watts of power can not use 66 watts of super fast charge because it will damage the battery. The specific model needs to be determined according to the manual of the mobile phone.