My first was Stella. I was very impressed with how easy it was to divide it and make more plants. Over time I had 6 big clumps that I sold for $10 each at a garage sale. The buyer even dug them up herself. Don't have any now.
Then I got a box of what I think were seedlings from Wayside Gardens. A large red one, a peach one and a yellow one I divided and gave to a number of people. One of the yellows and one red is still growing in my neigbor's yard. None in mine.
Then I got my first fancy ones, Siloam Baby Talk and Praire blue Eyes. At one time I have a row of Siloam Baby Talk all alone one side of my house. Maybe 30. I was obsessed with dividing and multipling. All gone now.
Then I joined the daylily forum on Daves Garden and discovered a whole new world of beauties I could never have imagined. It's been an addiction now for over 20 years. Trying to cut down, but somehow a few new ones sneak in each year.