My answer is that Saturn would get the nod as the most elevated planet (emphasis on planet). Neptune in the 2nd could be the placement that describes your spiritual consultancy, as the 2nd house is a house of profession. The Moon also has a connection to counselling and spirituality, as well. Is your MC also in Cancer, or is it Leo? What is the MC ruler doing in your chart?
At least in the western tradition (contemporary and classical) the nodal axis isn't classified as a planet per se, and it's mostly interpreted as a point of gain in the case of the north node, and a point of privation in the case of the south node. Even in modern psychological and the theosophically influenced branches, the north node is seen as a place where you have the potential for maximal soul growth, while too much time spent at the point of the south node will result in spiritual stagnation. Still, there aren't standalone significations for the nodes like in jyotish, where Rahu and Ketu are on the level of the other 7 planets.
I'd say a "cousin" of the most elevated planet in jyotish would be the atmakaraka - planet with the highest degrees taking on a greater importance in the life of the chart owner, but I can't remember reading or hearing anything of an elevated planet doctrine in jyotish. Perhaps you or someone else with more familiarity with Indian astrology have something to share about it here?
With all that said, in the spirit of greater knowledge, you could look at the charts of people who have the nodes as the most elevated point in the chart and see if its position would fall in line with a planet that is the most elevated.