SSSS.Gridman, Darling in the FranXX Recommendations
They're both Trigger shows that don't have quite the usual Trigger feel, but still very good overall animations. Both also involve giant mechas.
Darling in the FranXX is more romance / drama based, focusing on the characterization of the main cast and their journey to better understanding their current world as well as to adulthood.
SSSS Gridman, on the other hand, seems to aim for surrealism and mystery (though not in an ideal way). It also does try to characterize the cast, but to a lesser degree.