Namaste!
It would be a great honour for me if rasikas here would take a look at my book - Navarasa Bindu, which extrapolates the variations of the Navarasas. The book is available on Amazon Kindle and can be read for free if you are an Amazon Kindle Subscriber.
I am providing the links (US and India) below. You can find it by simply doing a search of the title (NAVARASA BINDU) also.
https://www.amazon.in/dp/B084CTPVLL
https://www.amazon.com/dp/B084CTPVLL