For RF, the first three Princial Components (PCs) explain 39.6% of the variance (with 90% of the variance being explaind by the first 33 PCs): P C 1 (17.0%) expresss the agreement among all features, P C 2 (15.1%) distinguishes consonants from vowels, while P C 3 (7.5%) is hard to interpret.
in all three cases, the most important tendency (≈ 17% of the variance) is shared among all classes, followed by the rough distinction between vowels and consonants (≈ 13% of the variance).