Complex sentence: Others have suggested that the word "naco" comes from the Irish English word "knacker" which has the same meaning and usage, and is substantially plausible, as Mexico absorbed Irish immigrants in the 20th Century (Edmundo O'Gorman being one famous example).
Split into simpler sentences: Others have suggested that the word "naco" comes from the Irish English word "knacker"; which means exactly the same thing and is used in the same way. The word could have originated from Irish English, as Mexico has had many Irish immigrants (Edmundo O'Gorman being one famous example).