A lot of the bikes I have seen mentioned here I haven't really seen in real life at all. Only a few.
Some small name bikes which very few have heard about? Probably underrated
Especially in the past bikes have been such a regional thing. Different places have different bikes. The world before internet was a very different place. Even today searching for some bike manufacturer will get 4 or 5 results on this forum. Maybe they are mentioned somewhere on the internet , but the bikes being localized in real life makes them virtual bikes for most people.