I've built wheels with LB rims and they really do hold up vs. the top brands out there. When their Falcon / Recon Pro line launched they were one of the only brands to be building wheels like Enve was, complete with no finish needed out of the mold and bladder extraction done the same way.
Their weak spot is lack of aero testing and development but otherwise their wheels are the real deal. Nearly certain they or their parent company is also the OEM behind Duke rims as well as brands like Nobl. I also have a set of Duke Lucky Jacks, the older ones I have don't have the differential profile and are the as far profile and weight are the same as a LB rim. The list of pro MTBers and wins on those wheels is pretty impressive.
I personally don't think they are the same quality as Farsports. They are better, to the point where they are past the point of diminishing returns in terms of rim quality. If i was building a top of the line gravel or XC wheelset for myself, i.e., looking for light high quality rims vs. looking for top of line aero performance, they would be my first choice even over Enve or Zipp.