The big 4 accounting firms are also the big 4 consulting firms. Deloitte, PwC, EY, and KPMG all have both large accounting arms as well as massive consulting arms.

There's also the "Big 3" or "MBB" which refers to the big 3 prestigious strategy consulting firms, Mckinsey, Bain, and BCG.

And then on the other end of the spectrum there's "WITCH" which is the consulting firms generally known as "body shops" that hire for quantity over quality. That's companies like Wipro, Infosys, TCS, Cognizant.

Accenture usually isn't included in any of the acronyms, it's just kinda an outlier despite how big it is. It's very much the same as how technically Microsoft isn't part of "FAANG", but whenever someone does say "FAANG" they typically just mean "the big tech companies" and you subconsciously think of MS as included in that.