I ship Damian with Grayson, Jason and the occasional group of strangers
Jon ? W/ Kon and whatever's fresh out of the oven
Also JonDami, I used to believe that Damian could Only ever top Jon until I came to One realization : kryptonian hormonal circles would make him hump whatever he can get his hands on, his own best friend included (actually. Only his own best friend. If he tried doing that with anything that's not the size of a grape it wouldn't end well for him, besides, Jon can only bottom in my mind, Damian's very much the only exception).
Jon is also very ignorant about sex in my eyes (a rarely. If ever. discussed topic within his household) and has no idea of how inappropriate some acts may be, pair it with alien superstrength and you get the worst companion ever if you don't want any distractions or desire ending your day without stained clothes. So ykno. Damian just gets humped and groped midway during their patrols and jon never learns from his actions because no one ever tries to correct or educate him as Damian is too ashamed to report his mishaps to anyone 🧘‍♀️ (Oh how much I have derailed my answer 🤭