Unlike many others, I use grease on spoke threads. I rarely have any issues with spoke twist on thin left rear spokes partly because of the grease and partly because I don't tension them that high.

If you're concerned, or simply not sure, lace the wheel, and bring it to only enough tension to have shape. At this point the spokes shouldn't be twisted, though you can flex the rim to slacken them and allow any twist to resolve.

Now spin the wheel and use a dry marker to dot the spokes near the end of the thicker section. That will act as a twist monitor, and when you're finished, you can wipe the dot off with alcohol or acetone.