Re: 2 week old, cloth too bulky!
I have found Fuzzibuns OS Elites to be fairly trim too. They are my go-to "on the run" diaper. Otherwise I really like bamboo prefolds in a Bummis original cover.
When DD was itty bitty I love my Swaddlebees Simplex AIO but they are spendy. We also used Imagine AIO's in newborn size and they were pretty trim (and not pricey like Swaddlebees).