Diamond Back Haanjo EXP sizing?

Taking a look at the Hannjo EXP and the sizing seems odd, but I've never bought a "gravel" bike before.

I'm 6'1 with a 34 inseam, so it looks like I would go with the 56, but the rest of the measurements seem small for a 56, including the 172.5 cranks.

Has anybody around 6' to 6'1 been on...