>> x86 is now six-wide, eight-wide, or nine-wide (with asterisks) for decode width on all major Intel & AMD cores. The myth of x86 being stuck on four-wide has been long disproven.

From the AMD side it was 4 wide until Zen 5. And now it's still 4 wide, but there is a separate 4-wide decoder for each thread. The micro-op cache can deliver a lot of pre-decoded instructions so the issue width is (I dunno) wider but the decode width is still 4.