From a FICO standpoint, a CLI only lowers your overall util which would incrase your score. At 1% util, it wont have any affect and your score will probably go down as well because of the INQs and new account and possible effect on account age.
Just my opinion but I would never apply for more credit or a CLI as a tactic to raise your credit score by increasing your overall util.
They only reason I would apply for a CC would be to get a prime card from a subprime one or you a a specific need to purchase something.
1/25/2021: FICO 850 EQ 848 TU 847 EX