The Xiaomi 55w fast charger can be charged with Huawei mate20pro.
Most of the chargers can charge each mobile phone (as long as it is a type-c port), but because each mobile phone has a private agreement and limited power, such as taking Xiaomi's 55W charger to Huawei mate20pro charging, the highest is 30w, less than 55w, because the millet private agreement is limited.
Yes, they're all Android fast charges.