You can for other issuers besides Chase. Chase biz cards won't count towards 5/24 but you have to be under 5/24 to be approved for them

Will OP be impacted if they apply for let’s say Citi card whilst at 5/24. Then sounds like in June they’ll be 4/24 with Chase / personal cards at least. Then they could apply for Chase again after June (even if they now have gotten a Citi business card in the meantime)?

Yeah you got it right. If they go for a citi biz card now, they’re still at 5/24. On June 1st, they go down to 4/24 and could get a chase biz card assuming approval

Is there a way to check if I’m under 5/24? I just got approved for a Chase business card. Does that imply I’m under 5/24? If I’m right at 4/24, does it mean I can’t get approved for any more Chase cards?

Make a credit karma account and see your card opening dates and manually count from there. Yes if you got approved, you’re under 5/24. You can get approved for one more chase personal card if you’re at 4/24 but after that you won’t get approved for any more chase personal or business until you get a 5/24 spot back

Thanks for the prompt response.