I could pull close ups from these two posts from Uprise, but they do a good job of showing the tops and stains of the boards too:
Street Plant is on PS Stix - warning sticker above the PS laser etched info
Fancy Lad is on Clutch - also looks like different / new size stickers on those boards, so not sure if they are doing that on all their boards, or only some brands, but the big size sticker in black and white makes it pretty clear to see (would usually have the letter / number stamped into the wood under that area too)
As has been said before, it is also interesting to see the slightly more individual stain colours from certain woodshops too, in particular the dark green for Clutch shown here.