Ok, I admit it I'm obsessed with my garden and have a few collections will not name individual plants it would take way too long. Starting with daylilies, lilies, peonies, clematis, penstemon, phlox, hosta, aquilegia, gaillardia, platycodon, nepta, echinacea, rudbeckia, tulips, daffs, bleeding hearts, campanula, cimicifuga, iris, hollyhocks, lamium, perovskia, sedum, shrubs and flowering trees may have missed a few. I have been doing this and adding for many years like around forty so it adds up after awhile my collections run from mostly small, a couple medium all the way to a large. Love my garden it keeps me healthy, happy & broke.
My space is limited and no more gardens are being added. I have to be able to keep the gardens looking decent it is plenty of work and has slowed way down the plants added.