What competition has x86 seen? I’m old enough to remember when there was more than Intel and AMD. When did they last license x86 to a competitor, 30+ years ago?

What competition has x86 seen? I’m old enough to remember when there was more than Intel and AMD. When did they last license x86 to a competitor, 30+ years ago? It’s great that documentation exists, but it doesn’t make for competition. ARM is at least licensing out to more than two manufacturers.