Inarguably the best boxer of Mexican descent

[Chino]

I like Sanchez, Chavez, Olivares, and Zarate over him based on their level of opposition.

While I respect your opinion, I wouldn't put Chavez over him. Chavez's 100+ wins were bloated by his penchant for fighting bums through most of his first 45 fights. Sanchez and Zarate... maybe. Olivares over Finito? I'm not so sure.

I've often countered the "Bum" arguement with this.
Take away the 45 fights people say he fought bums and his record still stands a lot better then most current fighters and is still and ATG

Exactly. Chavez defended his title more than 27 times, had more than 37 title fights as well, had the longest undefeated streak in boxing history, etc. Considered as one of the greatest boxers. Won six world titles in three weights. Beat world champions such as Meldrick Taylor, Jose Luis Ramirez, Macho Camacho, Edwin Rosario, Greg Haugen, Rafael Limon, Rocky Lockridge, Tony Lopez, etc. Ranked as the 18th greatest fighter by Ring Magazine back in the early 2000s. Ring also ranked him in their top 100 as the greatest punchers of all time.

Fighting bums or not at the beginning of his career, he did accomplish quite something. It doesn't surprise me to hear people say that Chavez was not only one of Mexico's greatest but also one of boxing's greatest.