Hi Perryboat,
Any aquatic or semi-aquatic plant that can be grown emersed can be used setting up a DSM tank.
Currently I am growing the following plants in my emersed set-up.
Anubias minima
Anubias barteri var. nana 'Petite'
Bacopa salzmannii
Ceratopteris cornuta
Cryptocoryne parva
Cryptocoryne nurii
Cryptocoryne wendtii 'Bronze'
Cryptocoryne wendtii 'Florida Sunset'
Cryptocoryne wendtii 'Red'
Cryptocoryne usterianna x walkeri
Eriocaulon parkeri
Eleocharis sp. (tall)
Eleocharis sp. 'Belem'
Hemianthus callitrichoides
Hemianthus callitrichoides 'Cuba'
Helanthium tenellum
Hydrocotyle sp 'Japan'
Hygrophila lancea
Hygrophila pinnatifida
Hygrophila polysperma 'Sunset'
Hygrophila polysperma 'Tiger'
Hygrophila polysperma 'Sunset'
Lindernia rotundifolia 'Variegated'
Ludwigia brevipes x arcuata
Ludwigia glandulosa
Ludwigia sp. 'Red'
Marsilea minuta
Penthorum sedoides
Pogostemon erectus
Pogostemon helferi
Ranunculus inundatus
Riccia fluitans
Staurogyne repens
lol...so many plants so little time!