Kenmore had a few with their names on them....mainly the cap, as in PentaVane, Penta-Swirl, Vari-Flex, and of course the Dual-Action....I think the best was the Super Roto-Swirl with the name embossed at the skirt of the agitator...
Whirlpool of couse always had the big "W" and the swirl on their cap, and "Surgilator" imprinted....some were SUPER, and Double-Duty
GE used "Activator" for all of theirs....didn't matter if it was 3 or 4 vanes, straight or swirled/ramped.....
even emblems on the front panel of machines, just made them stand out, the little details made the machine.......
Speed Queen had their "Q"
Westinghouse had their "W" with Heavy Duty
Maytags even had one for a while.....
were there any others?