adma
Superstar
If we're talking about the Amsterdam soccer team, then the j isn't silent, it represents a 'y' sound, so 'eye-ax' (English approximation) or 'aa-yuks'.
The cleaning product is always Ay-jax - ay as in ay, bee, cee, that is.
As a person of Polish background, I habitually mentally pronounce "Minaj" as "Min-eye".