I am a bit concerned that all of these series going into production so quickly could lead to some oversaturation problems again. I felt that DSC's second season was much stronger than its first, so the new creative team is learning, but maybe they should focus a little more on making DSC and now PIC as strong as possible without having to also develop 2 animated series, a Section 31 series and now 2 unannounced series.
But since they're gonna do it anyway, I think the first could be a Pike miniseries or series. The overwhelmingly positive response to Anson Mount, Ethan Peck and Rebecca Romjin's performances really says something about how recasting and revisiting a part of Trek's past can be done well, and there are certainly story opportunities since we know so little about the pre-Kirk Enterprise crew. Also, that Enterprise bridge set looks expensive - I'm sure they'd want to get as much mileage out of it as they can. Perhaps it wouldn't be a full-fledged series, but a smaller 6 or 8-episode miniseries. And assuming Section 31 gets off the ground and is in the same time period, there would be the potential to see Pike and the Enterprise make guest appearances, too.
As for a second series, I wonder if they're already planning a spin-off or sequel to PIC, to move Trek firmly into the 25th century, or a prequel to fill in gaps between NEM and PIC.