“Look at the specs on this”
The picture looks like a conventional prop in back of a turbo engine. How’s this different from a turboprop, except for the fancy looking blades and a 2nd set of blades and the blades being in back of the engine like they were on the B36?
The thrust of a modern turbofan is nearly all from the ducted fan not the gas generator at the core. The split is 75%+ from the fan alone. Same for the unducted fan the majority of the thrust comes from the blades not the gas turbine which has had most of its energy extracted in the turbines to drive the fan be it ducted as in conventional turbofans or unducted propfans. Turboprops work the same way the second fastest and longest range bomber in the world is the TU Bear Russian bomber it is as fast or faster than a 737 and is driven entirely by props at well over 500 mph. How the ducted fan, unducted fan, or prop is spun is irrelevant the thrust is from moving large amounts of air rearward.
The GE90 has a three metre wide fan at the front it takes a 100,000 hp gas generator core to spin it and generates 100000lbs of thrust the gas core is a small fraction of the thrust. That same gas core is used to drive Navy destroyers propellers with zero thrust from the gas core being used to drive that ship. It’s convenient to be able to dump the hot gas directly aft and get some residual thrust out of it in an aircraft but make no mistake modern turbofans are ducted fans first.