Chevron has 1 vertical and 0 rotational: Chevron.Com
same with texaco: Texaco.Com
same with mazda: Mazda.Com
those three also fit into the only one line of symmetry category, unless it can't be vertical. If so, betty crocker Bettycrocker.Com has only horizontal symmetry.
Hewlett packard has 180 degree rotational, if you get to count that the h is *almost* exactly the same as the p but flipped around. Hp.Com
pepsi has true 180 degree rotational Pepsi.Com
redhat (Redhat.Com) has no symmetry.
Same with lexus: Lexus.Com
same with boeing: Boeing.Com