White exhaust on a cold start

My 1995 3.4 v6 with 238xxx miles will have a high idle around 1200rpm when I start it up, and will slowly go down to 750 as it warms up. If I engage it into reverse or drive it will drop down to 1000/1100 rpm and still idle high well everything warms up. If it is a cold day the exhaust will be white, but I haven't noticed white exhaust with the warmer weather. When everything is warmed my truck runs like a watch. Would there be white exhaust on a warm day if it was a blown head gasket?
I'll post some videos and compression test results soon. Other revelant things, I've recently cleaned maf/throttle body/plugs/air filter.

 

Cold temp shows the moisture in the exhaust, like your breath.

Hot day not.

 

Yup.
Normal.

Head gasket would steam on every restart after sitting for a short period and would smell like coolant.
Bad valve seals would smoke on every restart after sitting for more than a few hours, and would smell like oil.

The catalytic convertor seriously cools the exhaust and promotes heavy condensation. Every modern vehicle "smokes" on a cold morning until the cat "lights off" and gets up to operating temperature.