At 6foot 3inches (191cm), my xl fits pretty good. I have scope to lengthen my effective reach by dropping my stem (lowering the stack) and using higher rise bars. Currently, my bars have a 27mm rise and I'm running 15mm worth of spacers underneath my 40mm stem.
My 200mm Brand X dropper is ran slammed and I can get maximum leg extension.
Its funny now that I think about it, usually my preferred dropper is one up 210. However, I wasn't able to run it slammed for my long legs. It would have been raised by about 10mm out of the seat tube. A 240mm one up was a bit too long (even after swimming it to 220mm). But the seatpost's collar (in conjunction with the 200mm post of the brand x ascend dropper), seemed spot on in terms of length and drop.
I've left my saddle in a neutral position