are there any other gravel type frames that are like the soma wolverine b type?

i was just watching a video on yt and someone's bike in the video was a soma wolverine b type (it's basically a multi drivetrain adjustable bike with the option for a belt drive too Soma Frame Wolverine v4.1 B-Type Lunar Rock Gray | Soma Fab Shop 

i would like to get a gravel bike one day and this bike definitely is on my list of choices now. love the option to be able to run the frame how you want either wheel size and drivetrain choice etc. 

am just wondering if there are any other gravel frames that are as versatile (and have the option to run a belt if you wanted)? doesn't have to be steel either?