The right first account depends on your money and your situation, not on what's trending. Work it top to bottom and stop at the first "yes" you can afford.
Free first. Turn on Experian Boost (it's free) and set autopay on every bill you already have. These cost nothing and can't hurt you. Do them no matter what else you choose.
Already bank somewhere that offers a builder tool? If you use Chime, the Chime Credit Builder card is free and reports to all three bureaus. If you belong to a credit union (or can join one), a credit-union credit-builder or share-secured loan is usually the lowest-cost installment option anywhere.
Have a little cash to set aside? A secured card turns a refundable deposit into a small limit and builds revolving history. A $0-annual-fee card with a soft-pull prequalification is the friendliest place to start.
Have almost nothing to spend? A free option (Experian Boost, Chime, or free rent reporting) is a real start. Don't force a paid product you can't comfortably carry.
The gate that overrides all of this: affordability. A credit-building account you can't pay — every month, even in a bad month — is more dangerous than no account at all. If you can't answer "yes, even in a tight month," it's not the right one yet.