Love square/triangle: Need recommendations

I really want to watch some kdramas where multiple guys like the lead girl, i really loved scarlet heart ryeo, where the cast are mainly guys and then there was one main girl, another one is hwarang, I'm mainly looking for love squares but if you know any good love triangles please recommend them to me. I like dramas with jealous guys and guys who are possessive and dominant. I'm mainly looking for kdramas but you can also recommend me c-dramas, i don't really watch thai or j dramas. 

For reverse harem dramas, try:

• You are beautiful
• Goho's starry night
• Cinderella and 4 knights
• Flower Boy Ramyun shop
• Mr. sunshine - melodrama with tragic end

thank you for your recommendations 

Heirs

Was it Love 

Love Alarm

My Country : The New Age

The world of the married

Dinner Mate

Just Between Lovers

The King : Eternal Monarch

Itaewon Class

Another Miss Oh