No level 90 nodes for Bot/Min?

[Jojoya]

The level 90 nodes are in the last 2 zones. If you were looking before you reached level 85, you wouldn't see them.

The ones at level 90 are timed nodes.

Not all of them are timed. The timed nodes are the usual ones for collectables and reduction, plus legendary if you've already learned the folklore tomes.