I don’t think a single structure could, or should be made. My thesis contains no literature review, no data analysis (unless you count ideas and reasons as data), and no section on methodology – it’s entire focus is upon contructing reasoned arguments and responding to those of others. Another academic in my department doesn’t believe in the necessity of concluding chapters or sections. Not only would a single structure be insensitive to the needs of different disciplines, but it would, in my view, suck another drop of creativity out of the PhD writing process.