For dry smokey flavours (rather than sweet) I’ve had continued successes with Northern Rhône Syrah and Zweigelt (but who the h*** has Zweigelt lying around?).
I’ve also had good pairings with Rioja, Cru Beaujolais and White Sancerre with a little RS.
Good point! I totally blanked on Bedrock. I wonder if he 2018s are anywhere ready? I have a lot. I think I may have a 2016 Weil A Way, and a 2016 Sky Vineyard Syrah (but I have read Cellar Tracker reviews that say it’s nowhere ready).
Franny Beck’s rosé of Pinot noir has gone well with smoked chicken, and rosé champagne is awesome, too. Bedrock OVZ or CA Syrah have also been known winners. This is purely based on more traditional bbq flavors and not something like an Alabama style white sauce.
I’d probably go with a red, but depending on the rub and herbs might go Riesling or Chenin Blanc with a touch of sweetness since you are looking for a white.
I think you have a lot of leeway here and would go with your first two options as a guide. I would lean towards something with more fruit than less, medium or higher acidity, and low oak/tannin. More likely, it will be on the young side (<10 y/o?). I like the suggestions made so far.