Can you talk more specifically about the products/amounts you used? My car is gutted from the front seat back, except for headliner. I wouldn't mind adding 10 lbs or so back in if it cut down on noise.
disclaimer...I am not an expert, but I did sleep at a Holiday Inn Express last night........ IMHO, the dyna and Kil mats are for deadening the resonating/vibrating/transmitting of road sounds via the metal surfaces that face the road. And around door speakers. The closed cell foam (ensolite is a brand) is for overall sound deadening and insulation. There are TONS of info on what to use where.......tons of it....lots of arguments, debates, opinions, etc...lol If your budget allows only one item, and it were ME...I would use closed cell foam to get overall deadening AND temperature insulation. Then you only need a little bit of kilmat for the door panels (around the speakers and some directly behind the speaker on the inboard side of the outer door shell w/foam over that. (something I still have yet to do...I wanted to go the easiest accessed locations first, cargo, and go forward from there). Measure 3 times, order once. You can always order more. You do NOT have to cover every single inch with Kilmat, but may want to with the foam for the best effect. The thicker the foam, the hard to get the floor carpet back in the nooks and crannies. I think I ordered 3mm for that and 5mm for the thickest everywhere else. As far as amounts...phew....sorry, you're on your own...I'm not good at that...for woodworking, I measure 5 times, cut twice, measure again, get a new piece of wood and start over.
I chose to use butyl rubber AND closed cell foam for the combo of sound deadening effect of both materials and heat/cold insulation with the foam.
I chose the KilMat brand butyl rubber, 50mil at Amazon. 80mil was overkill and heavier.
Amazon.com : kilmat
For the ensolite, I bought a combo of some from amazon and some from AliExpress.
Amazon.com : uxcell 118mil 16.36sqft Car Heat Insulation Cotton Foam Sound Absorption Deadener Mat 60"x 40" Waterproof and Moistureproof