The primary difference in styles that caught my attention as I write this is that the earliest adventures included statistics in parenthetical notes within narrative text paragraphs (the contents of course varied, sometimes as minimal as just hit points, but that's a not my main thrust here). Partly this is a result of the formatting in classic TSR modules and texts varying over the years but of course I want something that satisfies my own intuitions regarding brevity, usability, etc. I was writing some stuff recently, and started wrestling with myself over how to present monster statistical notations in the adventure text.