If Bhelen is King, he will prioritize reaching out to Celene and ending the trade disruptions caused by the civil war, so that the food shortages in Orzammar will not last long. He also does not officially reach out to Kal Sharok, but is the finances behind the Merchant Guild's attempts to liason with them.
If Harrowmont is King, he will make a lot of money aligning with Gaspard, and will ignore the food shortage, causing riots in the Diamond Quarter. He will not reach out to Kal Sharok at all, and the Merchant's Guild goes behind his back.
If you put in a dwarf Warden, you will get the "Have you heard from Paragon Brosca/Aeducan" line
If you saved Branka (and at least in my test study, do not have a dwarf Warden) and Bhelen is King, you get a line about Branka doing horrible experiments on the casteless and Bhelen stopping her. I'm going to repeat this, but with Harrowmont, to see if you find out about him doing anything with her.
There are also lines referencing explorations into old Thaigs and the dwarves trying to figure out what's going on with lyium trade dropping off when it should be rising.