What kind of spending level are you thinking? ~$10K? ~$25K?

Depending on your amount that you intend to spend, it is tough to go wrong with the Sapphire Preferred combined with the Freedom for the award/$ spent ratio. Getting the min. spend with those would be ~$3500. The Marriott rewards premier is another solid card but I prefer the Ritz card although the annual fee is a turn-off to many. The benefits of it versus the Marriott more than make up for the difference in annual fee imo. The Ink Bold is another possibility but the spend is higher. This is where your budget comes into play.

Given that all these cards are issued by Chase, you'll have to make a clear decision on your strategy as you're going to have to stagger your applications. Right now, Chase has the best non-Amex offers right now imo so that should probably be your starting point.

The Citi TY Premier is OK but nothing special to me unless you have plenty of flights to bump up your return. I know some like the Cap. One Venture but that bank left a sour taste in my mouth many years ago so I avoid them but their 2 points/$ earning rate is tempting.

Personally, I wouldn't mess with the airline cards as the value is not there beyond the sign-up bonus. I'm sure that the churners would disagree but that is their right.