I don't think higher PG helps unless there is nicotine. TH is from nicotine and heat. You can get an ecig that delivers hotter hits and that would be either a fat-battery model (Ego, Riva, PgCig, etc) because they can use the low resistance attys and cartomizers so you'll get hotter hits. Or buy a higher voltage mod to get more heat out of standard attys and cartos.
There is also throat sensation from some flavors like mint, menthol, cinnamon, ginger, pepper, other spices, some liquor flavors so you can feel those hit your throat.
And there are throat sensation additives like QHit (FreedomSmokeUSA nad OneStopDIYShop sell this) and pepper
eliquid (FreedomSmokeUSA)