I found the WOB I might have misheard it but the bottom part says it (I don't know how to do the "Quote thing So I'm just going to copy paste it and put in quotation marks.)
"Question 5: 'Are the dragons of the Cosmere compatible with the current Investiture systems you’ve introduced?'
"Brandon’s Answer: 'There are two branches of dragons in the Cosmere. If you take the dragons from Yolen, they predate humans and are deities. People worship and pray to them. They can send things through the air to soothe others, bolster them, or take away their fear when they pray. This is one style of dragon. You’ll find dragons on other planets that have been created in their image, so to speak, who don’t have those deity powers. The Yolen dragons aren’t interested in Investiture—they’re highly Invested themselves. They can’t use the other magics because they’re already so full that they can’t access most of them. What you would call the 'lesser dragons' could theoretically use some of the other systems.'"
So as you can see lesser dragons can use some of the systems theoretically.