This is how it looks in 99% of Czech Republic.
It changes to terrain signs painted on trees sometimes but it is also standard. I found 2 other signs for cyclists, some cross border route that decided to make their own on both sides. And still most cross border routes use cz standard signage.
So how it looks where you live? Am I just too spoiled by standards for hiking and cycling signage?
We (Netherlands, Flanders and some neighbouring regions which are also adapting the system) are using a “bicycle knot points” network where individual routes are not marked, just the points with which you can make your own route.
https://www.fietsknoop.nl/planner
An example sign:
There are also separate (mountainbike) routes within nature that are not marked this way. Those just use the classic colored stripes and little signs for directions.