Eh, 5800X to 5800X3D is not a huge upgrade, I'd still do that rather than buy a mid range current gen card though.
If you don't already have 32 GB of fast ram and a good PSU, cooling setup etc. All round good build, I'd fix that rather than looking at new mid range GPUs.
2080S is still a capable card, unless you want 4K, in which case the cards you're looking at aren't great anyway. Since RT isn't a priority for you at this point, you're better off holding off on an upgrade for now.
It would help for you to fill out your system specs.
Bear in mind ray tracing performance is becoming more and more relevant, as its being baked into all next gen game engines, eventually it will be the default rendering technique in the majority of games.
ATX 3.0 PSU and good case/cpu cooling would put you in a good place for when you eventually do upgrade your system.
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Only 20-30% faster in raster, slower in RT.