Not to speculate, but a theory I’ve come around to:
I see the likeliest move being AR [Anthony Richardson] getting the job unless and until Daniel Jones outshines him, which isn’t happening as of now. Can always go to Jones later in the case of underperformance or injury.
Fantasy Impact:
In a training camp report, Holder mentions that "there does not appear to be a clear leader so far in the Colts' quarterback battle," however, he does note that Richardson has been more accurate on short/intermediate throws. If ARich wins the job outright, we should be shooting him up rankings, particularly on a week-to-week scenario; we've seen his legs give him consistent top-10 finishes, even if it's next to impossible to project him for a full season of starts.