Capital One’s secured card helped me build credit when I arrived in the US years and years ago. Interest rates were high but I wasn’t shocked by that given I was someone with no credit history.
These days my credit score is ~780 and I do some casual churning for travel points.
A decade+ out I have rebuilt my credit to excellent and secured cards were instrumental in that. Ironically my two secured cards from when the rebuild started have both been aquired by Capital One ;D