Rather than going on those assumptions, I like to give people a fair shot without assuming anything.
I believe time reveals what fruit they're producing. Sometimes you can discern this on the first date, and sometimes it takes longer to identify.
The gold-digging Christian date will request expensive restaurants, steer conversations to the topic of money, status, possessions, as what kind of car you drive, how much you make, what kind of house you live in, etc. They will rarely, if ever, contribute, and they won't like simple, low- or no-cost dates.
The Christian date who wants sex will listen to you speak about your purity boundaries, your plan to wait until marriage, wanting to maintain innocence during dating, then will behave as if you never said that.
They will attempt to seduce you. Their kisses will be seductive and an attempt to push boundaries instead of being innocent and respectful. They will touch you inappropriately, act as if they didn't know they were touching you there or say they did it by accident, suggest going to the bedroom "because the bed would be more comfortable than sitting on the kitchen chairs or sofa," etc.
The best way to deal with both of these types? RUN!