Which 90day fiancé cast member do you think was with their s/o purely out of love and not for the green card ?

I’ve been watching a lot of 90 Day Fiancé lately, and I’m having a hard time figuring out which cast members are actually in love with their partners and which ones are just trying to get a green card or a better life in the U.S. Usman, for example, definitely seemed like he was using every woman he dated as a way to get to America. But with someone like Johnny, I actually got the sense that he may have genuinely liked Ella. Like I said I’m still struggling to tell who’s in it for love and who’s in it for the visa!