Help with the difference between OP and Datejust

[btwistround]

Got a Rolex itch to scratch.

Also on a list elsewhere for a few others and mainly what arrives first really.

Originally had eyes on Batman. But let's be realistic. With this AD I don't have a sufficient purchase history and with the hype? Won't ever see daylight.

Was on list for red and yellow OP41. But those got discontinued this year. Still got the green in play.

So now my Rolex list is green OP41
Datejust 41- steel and white gold

and YM- everose or Rhodium. Not fully decided yet.

YM I'm cool with.

OP and Datejust though?

The difference I can find is:

DJ has date, precious metals and bezel option.

Other than that, sizings, water resistance, clasp, are the same for both?