Elementary cellular automata show different systems and fractals like rule 30, rule 90, and rule 110. I want to know if there is another classification or type which shows similar structures just like in elementary cellular automata (ECA).
For example what other systems can show structures similar to Sierpinski triangle (which is the same as rule 90 in ECA)?
Is there a method to build rule 30 or 60 using other system than ECA?