Thanks for the nomenclature explanation, Lefty.
From what I understand, the lilies Chelle is describing were sold as short (24") border lilies having a cultivar name of Gold Band. It was entered in the data base as cultivar Gold Band as was Sue's lily. Chelle's lily looks like L. platyphyllum with the spots and Sue's looks like virginale (without spots).
I am not aware of a cultivar name Gold Band. Gold Band is a common name for L. auratum. With the Online Lily Register permanently removed from the internet I can not check to see if there happens to be a cultivar name Gold Band. It is also not listed in the most recent supplements or the Dutch data base KAVB. I suspect Chelle's lily is either a genetic dwarf of var. platyphyllum or a hybrid involving it. I have treated both Chelle's and Sue's lilies as species for now.
As for drainage, it is helpful to look at the species native habitat. In Japan L. auratum grows in wooded hillside margins and more commonly in lava rubble and volcanic ash (fine sand). Hence another common name for it is mountain lily.
Since the lilies were sold as short lilies I would leave them where they are. The presence of surrounding plants may help alleviate drainage problems. Unfortunately the one and only L. auratum I have tried didn't even make it a year in my clay soil. But it did grow to about 5.5 feet before disintegrating.
