Logo Designs can be arranged by category. I have isolated 5 of the most used/well known categories for logos.
SYMBOLS / BRANDMARK CATEGORY
WORDMARK CATEGORY
LETTERMARK CATEGORY
COMBINATION CATEGORY
EMBLEM / BADGE / SHIELD CATEGORY
There have been many styles of graphic design throughout time, and these styles are still frequently requested and can be very helpful in discussing a particular style that you might be looking for in your logo, advertisement, or other artwork.