What are the names of five sites where receptors for taste are found?

Question

Which of the five sites is the predominant site?

Answer 1

These receptors are known as taste cells, and they are contained in bundles called taste buds, which are contained in raised areas known as papillae that are found across the tongue. To date, there are five different types of taste receptors known: salt, sweet, sour, bitter, and umami. Each receptor has a different manner of sensory transduction
Receptor molecules are found on the apical (on top) microvilli of the taste cells.

The facial nerve relays information from the anterior two thirds of the tongue and soft palate, the glossopharyngeal nerve from the posterior one third of the tongue, and the vagus nerve from the pharynx and epiglottis. Information from these cranial nerves is processed centrally first in the nucleus of the solitary tract of the medulla oblongata and then by a variety of forebrain and cortical structures.

Sweet, Bitter, and Umami (now sometimes called Savoury), which work with a signal through a G-protein coupled receptor.
Salty and Sour, which work with ion channels.