There is some limited discussion here[0] which doesn't fully explain the prevalence of "tl" but suggests the word "atl" meaning "water" was very common and ofte

There is some limited discussion here[0] which doesn't fully explain the prevalence of "tl" but suggests the word "atl" meaning "water" was very common and often combined with other words to create new words metaphorically. [0]https://basketmakeratlatl.com/?page_id=1508 https://basketmakeratlatl.com/?page_id=1508