You're right, as soon as they fix the traffic lights and restore the power here in PR, I'll go out in the jeep to look for other evaluations. Thank you
Have you pressure tested the cooling system?
Have you visually confirmed that your fan is turning?
Using your hand or using an IR gun, have you confirmed that all the hoses are warm (and that your thermostat is open)? I believe the hose at the top of the radiator will not feel as hot if your thermostat is not open.
If you aren't sure, I'd confirm that your thermostat is the proper 195f and is opening up (test it by boiling it in water and see if it opens). Doing so will also you a visual on if it's new or not.
If your system was super rusty it's possible that your iron water jackets are clogged up from the corrosion (much like how arteries clog up from high cholesterol). If nothing else solves your issue, I'd probably flush the system from the block and run Thermocure with distilled water. Just know that if it's super rusty and your freeze plugs are rusty, it will remove that rust and could result in the freeze plugs needing to be also changed.
Thermocure will also eat away at flakes of rust in there that might be hindering circulation. Was your radiator changed before or after the supposed flush and engine block was drained? If changed before a proper flush, it could be clogged. You don't want to continuously chase your tail on this. If your thermostat and pump are good and your system isn't leaking, I'd crack open the engine block's drain port. If it's super hard to open then they likely didn't drain it, which means you need to logically start the process over and not trust that any work was done (correctly) until you verify.
I don't believe your issue is due to not having an E-fan. Many of us delete e-fans and go with a mopar viscous fan clutch (me included). Speaking of Mopar, all these parts that were installed should be Mopar if you want a solid reliable system. The Mopar thermostat and water pump aren't all that expensive and are known to work in the harshest of summer conditions.
My system was so rusty that I did two separate batches of Thermocure that I got on Amazon. You will want to run the vehicle with just Thermocure and distilled water. Then flush it multiple times until the water isn't black anymore...you can run a second batch of Thermocure when the water starts to clear up if you want to do it again (rather than wasting those final flushes to get it clear, just to add another batch and start all over again flushing it days to a week later depending on how often you are able to run your engine without causing it to overheat).