What is another word for most well-established?
Pronunciation: [mˈə͡ʊst wˈɛlɪstˈablɪʃt] (IPA) 
The phrase "most well-established" is a commonly used expression to describe entities, organizations or individuals that have been around for a long time and have firmly established themselves in their relevant industries. However, there are many other descriptors that can also convey the same meaning. Some synonyms for "most well-established" include "long-standing," "firmly rooted," "established," "well-known," "respected," "esteemed," "venerable," and "prestigious." Each of these words provides a slightly different nuance of meaning but all of them share the same implication of an entity or individual that has stood the test of time and earned a reputation for excellence.
