Does any manufacturer besides ADC makes LCC connectors?

Answer 1

Try Amphenol or AMP, they are the largest connector manufacturers in the world.

Please be a little more specific about the specs you are looking for. The LCC connectors look like RF connectors,

Both AMP and Amphenol have very broad lines of RF connectors, much more than ADC. And, they are able to make connectors to suit custom applications if necessary.