Thinking to deal quickly with a few long-outstanding suggestions (ever the optimist), I opened this topic from last year. But, re-reading it, I feel I should first respond to the comments made about Spanish words "coming into" Chihuahua. Cholo, chola and tonto have been allowed as rare words from the beginning of Chi. Tonta has never been accepted.
The word list we started with was compiled by people with a lot of time on their hands, from various sources including, I gather, some unabridged dictionaries published in the US and Britain. Cholo and chola can certainly be found in several English dictionaries, from both sides of the Atlantic. Tonto, all in lower case, is not in so many dictionaries, but it is in Wiktionary, the Shorter Oxford and the OED, as well as some slang dictionaries. The OED labels it "originally U.S.", but gives usage examples from both the US and Britain. A 1985 citation is from the Listener, a magazine published at that time by the BBC: "His two heroes are both ex-FO types and both terminally tonto about cricket."