Not sure what you're looking for here, or rather, what's in the best interest for your +1. There's so many cards to choose from, hard to say what's best for your situation.

Are you looking for no-fee cards? To hold onto without churning, for the purpose of building up credit history? Numerous cards in this category.

Or rewards/points cards, which may or may not have $0 FYF? And your +1 is looking to hold onto, agreeing to pay an AF? Churning without established credit is probably/obviously not what you're looking to do, right?
Three examples that come to mind are:
BMO World Elite MC - household income $120K
CIBC Aerogold Infinite Visa - household income $100K
TD Aeroplan Visa Infinite - $100,000 Annual gross household income
Only the TD card currently has a $0 FYF offering, plus $50 cash rebate if applied through GCR.

Again, getting back to building credit strength, if you/+1 bank with any of the above and have any establish history with them, I'd first contact the FI and ask if there is a pre-approved credit limit offer on the +1's file first, so that you can apply with no credit pulls.

And FWIW, I believe household income is defined as being the amount combined between spousal units (not parents/children).