Halo Infinite + Global Publishing game (something different than KI, not a new IP) in addition to enhancements to already existing games such as Gears, FH4, Ori, etc. I could see Tactics coming out on consoles very closely after launch or even as one of the launch titles.
Like I've said before, with Game Pass it's gonna be way more important to have a steady year-one lineup than a steady day-one lineup. And if there would be like 3-4 games available day-one, people in here would then start arguing that "MS is sending them off to die to launch against a major AAAA game that's gonna steal all the attention". Like we're still talking about Halo which is quite possibly going to be the equivalent of BOTW on Switch. Xbox does have the benefit that all XB1 (and a huge chunk of 360 titles) are available when playing on XSX which was the biggest complaint for the Switch since that launched with like less than 10 titles AFAIK.