You clearly have a sick nose if you find all these batches to be the same.. The drydown is the same but not the opening, like the first 30min or so.
My 15U11 open with a very crisp, sour/metallic pineapple. Almost like a cucumber notes. However my 15X01 open with a mellow, softer and darker
pineapple with a kind of roasted vibe to it. And my 15Q01 was a crazy fruitybowl at the start, not really pineapple prominent but more like different fruits.
And 15U01 opens with a darker and syrupy pineapple feel, almost woods right at the start. You call these "all the same" ? I don't think so