99 Ford 4.2 V6 Codes + Diag Help

Hey there- my 99 F150 4.2 V6 RWD is throwing the following codes at startup with seemingly little symptoms. If I clear them they disappear for the duration of drives and only return when I restart the truck. No noticeable issues with drivability or anything like that but it will occasionally over-rev on startup. Maybe a little louder than usual through second gear but nothing crazy.

P0340 camshaft position sensor a bank 1 P1520 intake manifold cntrl circuit P0443 evap purge control valve circuit P1451 evap vent control circuit P0135 o2 sensor heater circuit bank 1 P0155 o2 sensor heater circuit bank 2 P1409 egr vacuum regulator solenoid circuit

I have checked all fuses that logically matched up given the extensive “circuit” mentions but they are fine. Thinking that starting with o2 sensors makes sense as they could possibly cause rich/lean and mess with evap but am I off base?

Truck has relatively new water pump, tstat, plugs, coil pack, AC condenser and compressor if that context helps. Appreciate any insight or tips for where to get started. Thanks!