Kenda makes a very wide range of tires. You just have to be able select the correct tire for your application. Unfortunately, 700C has pretty much eliminated 27" from the modern picture. The bulk of the market for 27" is pretty much restricted to vintage, entry level bicycles. Consequently, the tire manufacturers are not going to offer a wide range of 27" tires. The volume manufacturers, like Kenda, will target the biggest slice that pie, someone who wants a durable but inexpensive tire. If you want a more performance oriented 27" tire, they are still out there, from brands like Continental, Michelin and Panaracer, but you may have to buy them though a specialty shop and they will probably cost you more than the garage sale bicycle you intend them for.
I haven't heard of LHC. I know IRC makes an inexpensive (i.e. $5.00) 27" tire.