I haven't seen Oreshura, To Love Ru, probably Avoiding to watch for some reasons.
Out of these, Quintessential Quintuplets
Gotoubun gave me a good example that not all harem anime has to be super ecchi and devoid of character development. Most importantly MC have a personality (Which mostly every Harem MC lack) Female characters are well-written and I'm definitely curious to see what the current season could bring for them.