You will not be able to implement every special paintwork of an airline 100%. But if you have the liveries and the ICAO codes are set (this is not the case with all liveries), at least the right airline should land.
And you just need models for the AI aircraft so that the right aircraft is there. Liveries would of course be required for the models.
In addition, it is currently difficult to check because there is not much traffic at the airports and the live traffic is about 0.5 hours late.
Question to Asobo: Is it possible to store several ICAO codes in one livery?