When I hear or say K, T, or Ch, I hear a higher pitch frequency being used than B, M, L (which sounds like lower frequencies).

Humans have a psychoacoustic effect that makes higher pitch sounds perceived as being louder.

When somethting has a louder intial sound, but the transient sound is about the same, it makes it feel more snappy (like a snare, versus a kick). This is reminiscent of a jagged edge.