Data point on Chase that might be helpful:
About a month ago, I opened a Chase checking account (in-branch while visiting the US). Approximately a week later, I applied for the Chase Sapphire Preferred card, unfortunately missing the 100k offer. Given my limited credit history (my first Global Transfer Amex was only ~4 months old), I wasn't very optimistic.
As expected, I received a rejection letter citing "insufficient information on credit file" and "limited transactions/funding in my Chase account." I decided no harm in calling the reconsideration line, but before that, I transferred approximately $15,000 USD into my Chase checking account.
During the reconsideration call, I acknowledged my limited credit history but explained I had some significant upcoming purchases and was hoping to get approved for the CSP. The agent asked about my income and occupation, placed me on hold, and then informed me I'd receive a decision via email.
Stilll wasn’t hopeful at this stage as in everything I’d read Chase is firm in the 12 months credit history… but Lo and behold, a few hours later, I received an approval email with a $5,000 credit limit. The card arrived about a week after that.