I am sure "survey" all the t-shirts ever printed in a particular time frame or in a certain country/area a certain font would turn out to be the most common or popular. I just don't think that there is a favorite among printers.
But as posted, it depends. People doing jerseys may find themselves musing one of those collegiate fonts more often.
In my case, I use one of those stencil fonts more often. for military type artworks. For vinyls, I prefer long or more condensed fonts for the reason that it gives the letters a little more room to stick or hold on to. I also think most (especially shorter) text looks better this way. But I try to use different typefaces so most of my shirts won't have the same font.