white exhaust and misfires

I have recently been on the hunt for the cause of excessive exhaust smoke, as well as subtle misfires upon cold starts. my 5vzfe has 325k miles, I recently did plugs, wires, coolant system flush, radiator cap, pcv valve. truck runs amazing, but the slightly sweet exhaust, extra smoke and the very inconsistent misfires has set me to dive deeper. I got the truck in winter, and have yet to see it run in warmer weathers so initially didn't think much of the extra smoke until its been warmer out.

I have gotten no CEL but misfires are noticable for about 10 seconds or so upon half (rough estimate) of cold morning starts in the past 2 weeks or so. The truck doesn't seem to want to do it all day after the first start regardless of how long it sits, only overnight in the morning starts.

The exhaust once driving and fully warm looks normal. here is a video of me blipping the throttle. The engine had been running for 5 minutes or so, Not thermostat open warm, but no longer cold. I did park the truck in the garage to see if it was condensation but clearly shes still huffing and puffing as shown https://youtube.com/shorts/_HK1zxFugNk?si=Rfy90H3yrWOYafpJ

When it comes to head gaskets and/or a cracked head, I have no symptoms other than what's stated. No milky oil or cap, no major coolant loss if any at all. I performed a block test with the weird liquid that changes color. after trying it for 5 minutes while the engine was warm, and this morning with the engine cold I no color change meaning i "passed" the test. The engine hasn't been overheated, temperatures sit at 187. (the smell of the exhaust doesn't smell like fuel, but it isn't obviously coolant. it is sweet, but me and a few others have just said it smells like old 90s truck.

Im really confused at this point. Im now thinking it could be something with fuel sys or intake. if anyone can come up with anything else, please let me know. I really hope I'm not chasing my tail around in circles with this one.