To be honest, if you're going down the Jade path, then you should include Cathy as it looks like that might be more fun than a plain Jade path.
My list is just my opinion. I personally don't think Cathy's relationship will move past a casual hook up. That doesn't mean it couldn't happen. None of the SG paths are guaranteed. DPC can close them all right now if he wants.
Bella ==========> (Main Girl)
Bianca =========> (Jill or Bella can catch you before things progress, ending your relationship with both)
Camila =========> (She could disappear like Mona & Riona)
Cinderella =======> (She was only flirting with MC. Nothing progresses past Christmas)
Jade ==========> (Sage finds out about your relationship & Jade chooses her daughter over MC)
Jill ===========> (Main Girl)
Josy ==========> (Main Girl)
Lily ===========> (She ends rolling with MC as it conflicts with her ability to be a stripper)
Maya ==========> (Main Girl)
Melanie =========> (She goes back to the dynamic she had with Sarah before episode 11)
Nicole ==========> (Marvin's dad Luke doesn't approve of Nicole's relationship with a college student)
Nora ===========> (She sticks to the rule book regarding teacher student relationships)
Quinn ==========> (Too obvious)
Riona ==========> (She never returns to B&R because of Buddy & her ailing grades)
Sage ==========> (Main Girl)
Sally ==========> (She is a part of the plot with Magnar & MC finds out about it)
Zoey ==========> (Main Girl)