The connections we have between Jasnah and Palah and Shallan and Shalash are tenuous at best, relying on a table that is described as flawed even by the in-world writer:
(Emphasis mine)Also, our biggest association between Shallan and Shalash is that the glass became blood when she went to Shadesmar, when we know that Soulcasters can transform objects into any of the essences. However, this connection can be reversed, the case can be made for her to lean more toward Vev due to her unconscious Soulcasting converting an object made of glass. Also, her Memories appear to be oriented around her eyes, thus linking her to that Body Focus, also associated with Vev. The biggest criticism that I can think of is the personality traits, and their relation to the symbolheads, who ask for truths. However, this can be explained as a flaw in the table, not unprecedented as Peter has already made one correction to this part of the table, either in-world or out.
This would also mean that the Body Focus that Shallan and Jasnah have in common is the Soul, which makes sense since the magic they have in common is Soulcasting.
If you believe, as I do, that the Focus for Surgebinding is the Body Focuses (not a hard leap in logic, there), it reaffirms this position, since it would mean that the Focuses associated with Windrunning are Inhalation and Exhalation. Considering all the breathing described in the text during Kaladin and Szeth's fight scenes, that's not much of a stretch. But it would mean that the two that Jasnah and Kaladin have in common (atmospheric pressure) relies on Exhalation. If you look at the text where Jasnah using her Stormlightning power it reads like this:
(Way of Kings Hardcover, p534, emphasis mine)It would seem that the Focus used here would be Inhalation, rather than Exhalation, but it must be remembered that in order to exhale, you have to inhale first. The binding between Orders here is tight given the right assumptions, and with how little direct evidence we have, assumptions are the only way to draw conclusions.