natrix.nat is a drop-in replacement for mat with some additional features. nat ensures that each row in your matrix should have the similar height, unless one of them becomes too tall.
At this moment, it is recommended to use nat only in display equations, but not in inline equations. This is because nat looks a little bit off when used in inline equations.
Documentation
nat
Every thing is the same as mat in typst.
This package also provides bnat, Bnat, vnat, Vnat,