Jojoe!! Welcome to the semp club
I love your photos!! Jade Rose is going to be a nice one I can tell! I don't think it matters if you leave the babies on or not, personally I like to take some of the larger ones off and plant them closeby so you have a mound sooner!! Your list from simply succulents looks really nice!! I love the "roller" type jovibarba! And I've had my eye on 'Olympicum' you'll like them too because the babies roll off as soon as you touch them, they can be planted where ever and will grow. They're small and like little marbles!!
Congrats! It sounds like your rock garden is coming along! Btw I posted some plant ideas on your other thread!
Cheers