Which RB is best to trade up for in dynasty startup as my RB2?? Mondre is my RB1 Joe mixon Aaron Jones James connor David Montgomery Dalvin cook Rachad White

Aaron Jones

Mixon because his value is crazy low but White before he enters top 15 RB

I'd skip all of these, and shoot for najee or Walker. Many owners are low on najee after last year's performance, and many are scared for Walker with charbonnet. Both are still young enough, and will hold trade value better than all listed, and with a good game or two, you could use them and an add-in to try to angle for breece hall. If the rest of your roster is good enough to contend, this gives you the better RB come playoff time, and all you need to do is make the playoffs to have a big upgrade(almost for free), and preserve your contending status.