The Icon has nothing that can be used to defend the timing.
A House Built on Sand is before H2016, as the fortune teller has is shop and is then homeless (and lost his shop) when 47 returns during H2016.
Landslide is the only one clearly before H2016 due to the client being Caruso.
I have always taken Patient Zero as just before H2016, or possibly during some of the earlier missions (depending on timing). The Class recording crew are still present, though the band isn’t, which I have taken as setup. And I doubt the hotel would have a gala in close proximity to a high profile murder like Jordan Cross. Plus, the time of year in Colorado is spring/summer and when we return in H2016, it is fall. Though the Colorado timing could be reversed (following year), the presence of the Class recording crew so long after Jordan’s murder does not make sense.
The Yardbirds is clearly between H2016 and H2, due to the newscast in Hawke’s Bay. Most likely just prior to the mission.
I haven’t played the new sniper map to determine the timing, but given the story flow in H2, I would assume prior to Hawke’s Bay and probably before the Yardbirds.