You can grow a lot with that setup, especially if you're willing to add a little CO2. I limit myself to medium or easier plants (all my tanks run roughly that amount of light). There are more plants that will do well for me than I have room to keep.
Easy: swords, crypts, java ferns, most types of hygro, bacopa, apongetons, lillies,
If you'll add the CO2, you can add more types of stem plants: mayaca, broad leaf stellata, aromatica, pearl weed, dwarf lobellia, hydrocotyle, blyxa, hair grass, the easier ludwigias and rotalas.
I've left out quite a few, but that's a start.