With us, we should send internet photos (or our own) of bricks that we like. Then the building material dealer looked at them and sent us about 10 addresses in the area where something comparable is available. So the addresses where he himself has delivered similar bricks.
In the end, it became a brick that we saw at the house of a colleague. He simply ordered it for us.
I would just go through the new development areas in the surroundings and ring the doorbell + ask, if you're completely stuck otherwise.
As already mentioned above, also inquire about the mortar. It is at least as important as the brick itself.