Not likely that there will be a conservative instance. Lemmys core principles are "left leaning" so that already lowers tolerance for the audience "the right" attracts. Every conservative instance eventually gets deleted and defederated because toxicity is baked into the idea. America's "left" is already right wing to the rest of the modern world, so going further than that is just... not great. You can hope for the "ENLIGHTENED_CENTRISTS" to try to keep a somewhat moderated instance but I wouldn't hold my breath.
Honestly, what's stopping mods from just enshittfying the sub. Like, make it text posts only. Remove all images and see how it impacts the traffic.