Rebuilding credit
What’s the best way to rebuild your credit after bankruptcy aside from getting a secured credit card?? Is being a second card holder of another (with good credit rating) going to help me?? Does credit bureaus also reports for the second account holders??

That probably would be best as the higher income suggests he will be the primary borrower on anything you do.
In terms of affordability, the last time I checked Capital One had the least expensive secured credit card I could find.