Here's some of mine:

-forceful prey x nervous pred
-feeder prey x feedee pred
-large prey x small pred
-tall, skinny prey x short, chubby pred
-bully pred x prey who is secretly into it
-trouble making prey who always gets into trouble x pred pretending to be pregnant while trying to sneak the prey into the movie theater they were banned from
-fatigued, touch-starved prey who needs love and affection x gentle, loving pred who comforts the prey with the warmth and safety of their stomach (this one is concerningly specific)

...I should draw these.