Why are the paintings of EI Greco considered to be the high point of mannerism?

El Greco's paintings are considered the high point of mannerism due to their distinctive combination of elongated forms, dramatic use of color, and emotional intensity. His works often exhibit a sense of spirituality and heightened expression, straying from naturalism and embracing complexity and ambiguity. The artist's unique perspective and innovative techniques, such as bold brushwork and striking contrasts, exemplify the mannerist style's departure from the balanced compositions of the Renaissance. El Greco's ability to convey profound psychological depth further solidifies his position as a master of mannerism.