Despite having a 19 count, you have neither a stopper nor heart tolerance, so controlling the auction if you make the "normal" values double may be difficult since you can't bid NT later or raise hearts with only two. Of the experts,
~20% chose to double
~60% chose a "heavy" 15-18 NT overcall without a stopper
~20% chose a "heavy" pass(!), planning to show the minors later with 2N if possible
and a stray vote or two for 2♣ with only a 4 card suit.
If most of the experts are unwilling to double with a 19 count, how far does this go? What about even stronger hands with the same shape, like:
22 count?
Jxx
AQ
KQJx
AKQx
24 count?
Jxx
AJ
AKQx
AKQx
The stronger your hand gets, the worse pass looks since 1♠ is increasingly likely to be passed out (and to be a reasonable place with a friendly spade break and most of the spade honors in opener's hand).
Would people here choose to double with these better hands? Still any passers or 1NT'ers with so many extra values? Do we have any takers for a 4-4 "unusual" 2NT or a 3♠ stopper ask?

Help

(1♠)-?