I have seen threads speaking about the connectiona of Dawnshards and Shards to try to puzzle out various intents, but I want to take this a step further to find out who may hold the Dawnshards in addition to their intents.
We know the Change Dawnshards is in possession of Ryan.
Shards who encompass the nature of change are
Ruin- naturally changes things by breaking things down.
Cultivation- cultivates things to change and grow.
Endowment- less evidence, but gives and changes possession.
I think the last is either Invention or Ambition
Invention is obviously in the business of creation of new things, so there is evidence here.
Ambition may change the status quo through its ambition, although this is not really supported.
Unity, Bonding, Oaths, Staying
This Dawnshard is evidenced by Shards with these types of Intents and in my personal belief, in Dalinar's visions telling him to unite.
Honor- his entire intent is focused around oaths and bonds.
Preservation- he wants things to remain.
Maybe Dominion- she wants to rule and keep things under her dominion.
I have no idea for the last, maybe Wisdom, if this exists.
Passion Dawnshards
Odium- his entire Intent is emotion.
Whimsy- his intent is also volatile and characterized by emotion
I could see Mercy being under this category.
Devotion may also be categorized here
The final Dawnshards may be something to do with Independence
Autonomy- quite obvious match of Intent.
Valor- exploring new waters and moving forward bravely.
Maybe Ambition
I personally think the Dawnshards Hoid and Sigzil held was the final Independence Dawnshard.
However- I could also see a Kindness group with Mercy, Devotion, and maybe Endowment.