It would interesting if someone did an experiment measuring nitrate levels and the effect of different species. Until then everyone is guessing at what likes nitrates. It is a reasonable guess to use anything that grows fast.
I've pondered exactly how to run this experiment, and it is fraught with experimental variables. What constitutes "a plant"? Do we determine nitrate sequestration on the basis of fresh (wet) weight? Number of "sprigs" or plants would be useful, as few (if any) people say "I have 100 grams of plants" in their tank, but number of plants matters little because plants vary in size, of course.
Establishment matters, as does the permeability of the substrate, particularly for plants that feed mainly at the root level. Light levels are variable, and pretty much no matter what size tank is used (and, therefore, depth of planting), someone will find flaws with the experiment.
I do note a number of people using pothos etc. in the system for absorbing nitrate, with one prominent YouTuber using variegated plants- talk about shooting yourself in the foot!
Also not considered by many people: direct nitrate sequestration. Some plants are intrinsically high in nitrate. It might be useful to try some of these immersed plants that gobble up a disproportionate amount of nitrate; much of the nitrogen consumed ends up in proteins, but there are some plants that have way more nitrate than others (arugula!) and growing them hydroponically in a tray on top of the sump or whatever might be quite useful.