> Trying to hand edit a disklabel, but I can't seem to find the right
> keywords for google nor the right man page.

disklabel has a few different "types".

I'd just leave it as is. Mine has: unknown.

Anyways it is document in disklabel(5) man page. (man 5 disklabel)
Search for "d_type values:" and "dktypenames" for the list of types.

Other type of disk types are listed in /etc/disktab and 
/usr/share/examples/disktab/.

And file system types are also documented in disklabel(5) man page. Search 
for "fstypenames" for list.