The concept of "brands" is pretty meaningless for all the roids/clones made in Rajkot. Parts are made in the same small shops, and assemblers then put various labels on them. Quality varies wildly for all. It seems to be all paid per piece work, so some days anything goes. It's not typical India, it's something Rajkot is infamous for in India, according to a native that reported here. With skill, patience and some rework, a good engine can be built or a CS restored with their parts. A machine shop will often be needed for some rework.
If you can't find a Lister CS, and can accept the parts cost and rebuild labor as part of the deal, they aren't a bad kit of parts. It helps to buy from a reputable dealer like Diesel Electric Services, as if you do get an part that can't be used, Gary has spares and will ship in a day. I have no connection, just experience helping with my neighbor's DES 8/1. I give DES a five of five star rating, and I'm not "easy". If buying a used 'roid or clone, set your price assuming you will find a major part that must be replaced (even a cylinder head) and then hope to get lucky.
During the heyday of the Listeroids, before the EPA banned them, some US sellers were touting their brand(s) and suggesting that total tear downs weren't necessary. It was wishful thinking. No one was successful in getting Rajkot to make consistent upgrades to their normal wild variation in quality, from container to next container, despite a great deal of skill, time and effort in trying to work with them.
I have a 'roid myself, with only splash lube, missing two head bolts, no lower sump or oil pump, plus a cylinder liner. I don't mind any of those mods, they are all OK as far as service life of the engine. Parts are commonly available. My neighbor's is a clone. Some extra plumbing and an oil pump to fiddle with but some real value in having it be a true CS in terms of parts way, way down the road. In the used market I'd not turn my nose up at either Listeroid, or Clone, but would have preferred a Lister. I just couldn't find one in my part of the country.