rows, pullups (palms away, add weight when you can) and bent over laterals all hit the rear delts pretty well
When I first started lifting seriously I really neglected isolations and since adding the bent laterals my rear delts have grown alot. At least for me just doing pulling exercises works my back way more. If you want to focus on the delt do your rows with a dumbell and bring your elbow up high. Barbell is way more of a back exercise for me
^ that's basically the same as bent over lateral right just a different name? Or is there a difference in form?
That's my favorite though so far that can be done without a cable machine. Dumbell row works well if you focus on pulling the elbow up rather than pulling with the bicep. Rear delts are neglected by alot of people but all heads of the shoulder are super important to the aesthetic appeal of your physique. Rear delt makes you look thicker from the side and adds some nice definition above the tricep