I don't have the Steam version of MMMP, which by all accounts is a somewhat "cut-down" version, but I know that, for me, running MMMP 24.1.6.124, the latest, the Orange Vocoder was offered as a free download only very recently. Don't know about Vandal.
Strange thing is that Vandal files are there in \_Content\MAGIX Plugins folder. But not in the mmm itself, even when adding folder with dll to vst path.