This is why it's so very enlightening to read perfume boards: all your impressions are interesting, valid to a degree in interpreting terms that are not clearly defined anyway, certainly stemming from personal/interpersonal experience.
Screechy to most I suppose is something sharp with a unpleasantly chemical-seeming impression (chemical in the pop culture sense of "artificial", not the literal sense of being composed of molecules like everything in the universe is). True enough, all the perfumes you mention (apart from Paris and Fracas and probably the older versions of Cristalle) contain ambroxan and/or dihydromyrcenol, two especially pervasive and "needles"-prickly ingredients, one like rubbing alcohol woody-ambery, the other citrus-clean (they're important however for diffusion/tenacity/bypassing IFRA restrictions, hence they're featured in 85-90% of modern perfumes to varying degrees).
In my experience -and in the industry at large- screechy does not equate loud however: I'm with Alto here. Fracas is extremely loud, even to the point of hysterical sometimes and on the right individual, but it's creamy, not screechy. Paris is also loud and yes, cold. (cold can be a good thing however!). Thick artificial vanillas and too dense patchouli in a sweet context can be suffocating but they're not screechy. Screechy is fingernails on a blackboard, as mentioned above, and those who equated it with high-pitched florals and many masculines (which are "fresh") are right on target (so many of the peony or freesia scents are screechy, have you noticed?). At least this is the best I can offer.
both Petite Cherie and Ce soir ou Jamais have a pear synthetic (a note I loathe) which comes from the flavor industry and does weird things: I get mouldy, musty carpet from Petite Cherie and stale white wine from Ce soir ou Jamais. (Sometimes I got the latter in Tendre Poison too). Interesting, but thanks, no thanks.
I bet the masculine fragrance you smell everywhere is Cool Water or one of its clones (and there are many) and the culprit is not the musk, it's dihydromyrcenol which in the immortal words of mr.Burr is "like sink cleanser spilled on an aluminum counter" (smells like lemony bleach to me). Thankfully some perfumers, like Jean Claude Ellena among them, hate it with an equal passion.