The way to pick your favorite cards, is to start with what the reward goal is then work your way back. For some people that will be specific airlines or hotels for others that might be cash back. For me I have found Hyatt and Alaska Airlines to be extremely valualbl to me and have built my setup around that. I also throw in Southwest Companion Pass as well as Hilton Free Night Certificates.
Hyatt Setup
#1 Hyatt Personal Card
Automatic Disoverist
60 Nights = Globalist
70 Nights = One World Ruby
100 Nights = One World Saphire
#2 BILT Mastercard
#3 Chase Transfer Card
Sapphire Preferred, Sapphire Reserve, Ink Preferred, or Ink Reserve
#4 Chase Freedom Unlimited / Ink Unlimited
#5 Chase Freedom Flex
#6 Chase Ink Cash