I'm 5'7" with a 30" inseam.
I run 2 different measurements to fit bikes I like to ride, then tweek with stem length.
For bikes where I predominantly sit down, I look for an effective top tube of 54cm for drop bar, or 59cm for flat bars.
For bikes where I predominantly stand, I look for a reach of about 43cm.
When you find measurements that fit your bike style, it becomes way easier to find your bikes because you can ignore all the marketing hype and unique sizing.