is there a saint for the dead or is there really a santo la muerte?

"Yama" is the Lord of Death and his messengers carriers of souls whose time is up on earth.

"Yama" is kind and 'just-doing-his-job' because of the birth-death cycle of humanity.

Yama has a beautiful story with Savitri, who diplomatically made him return her husbands life by befriending Yama.

Thats the Vedic (Hindu) take on Santo de Muerte, I guess.

Take care, he won't "come after" anyone. Rest easy.