I like the amazon biotopes, but the problem is that everyone tries it - including me! Now do some research for west africa and then you get a fantastic selection of plants. Anubias for instance - there are loads of options here! Take a look on the planted tanks website and I have listed some of the popular plants by region, west africa being one specific region.
Then look at north America. This brings in some wicked bacopas and if you select areas that include Canada or border Canada then you bring in the lobelia cardinalis. Now that plant comes into its own whenit reaches and breaks the water surface. Just hit google images and you will see exactly what I mean!