I had prepared some examples to use with most popular InnoSetup versions of v5.x, v6.x and v6.2; with: 7zip, CabWCX, iso, unrar, zip and zstd.
Some of the WCX Unicode plug-ins may not work in the InnoSetup ANSI, but the WCX ANSI plug-ins should work in the InnoSetup Unicode.