Note that ESRB/PEGI/CERO rating are not actually mandatory for purely digital releases
This is why most games on Steam/GOG etc don't have such ratings, as they are generally expensive to obtain
To release on consoles a game MUST have a rating for that region, but only because MS/Sony/Nintendo mandate it.
Thus for the release in May there's not likely to be a rating given taht its basically unnecessary at this point
For the console releases later this year, you will then see them submit for review ot PEGI/CERO/ESRB which will then be searchable on their respective websites