A sample size of one, but: my facial hair grows evenly until it gets around 2" long. At that point, a weird pattern emerges on my chin that gives me a forked beard. the rest seems to grow at the same rate out to about 9", which is the longest I’ve let it go. Yes, even on my upper lip, and even with liberal use of wax it ends up being this weird, curly thing that looks like a cloud hanging out there. Orderly handlebars just aren’t happening for more than a few minutes. A friend of mine drew a portrait of me as the man in the moon because of it.
So, IMHO, beards in general are strange. Mine looks pretty generic until it gets going.