This is stupid; use these terms with caution because alliteration is enough to pass for an analytical technique. If you want to be more specific then qualify the alliteration with the actual sound:
e.g. The alliterative 'g' sound...
they're generally used to emphasis/accentuate a particular emotion. Plosives emphasise anger,liquids emphasise a calm/eloquent demeanor etc
but this g tho
+1!
P, K, T, F alike generally connote something relating to anger, strength or frustration due to its harsh sounds.
S, L, M, N and assonance alike generally connote the opposite through the effective elongation of the word.