A dictator is authoritarian, but not all authoritarian forms of government are specifically dictatorships. Authoritrian governments can be groups or single leaders.
Abbott is not a dictator, he is a governor. He likely wants to be a dictator but he does not have the power to be one.
DeSantais = same. Certainly trying to be a dictator, but if Florida's assembly or Senate were in Democratic hands, he would be way more limited in what he could be doing.
Trump = same thing. He did a lot of bad and stupid shit as president, but not a dictator.
Putin is the closest thing to a dictator on the list. He, has a rubber stamp Duma (like Texas and Florida's legislative branches) but he has actually had the Constitution of Russia re-written to allow him to remain in power. While Texas has not term limits, I think this will be Abbott's final term. DeSantis will be term limited out.
Putin is in fact both an Oligarch and an Authoritarian. Putin has amassed a fortune using his power in government. That is within the definition of an Oligarch.
also, and this is just my opinion, spelling it "dicktator" takes credibility away from the argument.