Your call-out is a good one but while Trump uses homonyms, homophones, homographs, and puns, there is not a word I am aware of that covers the   range of operations intended in Trump tweetspeak. This is because the formal definitions you cited refer to whole words,   and many of Trump's operations in tweetspeak are only letters or phonetic equivalences. For example in a recent tweet, "security" was intended to indicate the letter "T". This there is no precise word for, that I am aware of.  Maybe you know of one...homograph, homonym, and homophone  refer to whole words, as I understand it. So your call-out is valid, but my error in useage is because there is not a word for the class of things I am referring to, that I am aware of. I think homofonic might be an easily understood term, for all the various sound-alikes that Trump uses; some of which are homonyms, homophones, or homographs, some of which are puns, and some of which are things which I do not have a name for.