Liz is a wonderful hybridizer and has registered many new brugs in her career as a hybridizer. One of her 'hottest' ones is Fruit Salad.
There is no way of knowing for sure. If you have seen some of the offspring I have from my crosses, you would know that anything goes. Altho, yes, it is a good guess that there was a double/triple parent with your seedlings. But there are some nice promising blossoms in your collection of seedlings.