My recommendation is to try Ilford MGV RC. It is really the best RC paper on the market today in my opinion. When you want to step up to FB, Arista.EDU Ultra FB is more reasonable than I expected for a cheap paper, it's a very neutral almost cold tone paper with good depth of blacks.
Direct positive there's only 2 choices. Ilford's direct positive FB paper and Ars Imago direct positive on polyester base. The Ars Imago stuff is probably the closest feel to old cibachrome paper, but also can feel plasticy and is extremely high gloss. Personally I don't like Ilford's direct positive FB paper. It's thick, very curly, and dries to an ugly dull gloss unless you ferrotype it. The ars imago stuff is likely to be Ilford emulsion just coated onto a different base, but the ars imago stuff is also very expensive per sheet. Also look into pre-flashing (or post-flashing, same thing) to decrease the contrast and increase the speed of direct positive papers. Also, make sure t do safelight tests. I use red LED safelights which work great with everything, even medium speed ortho litho film, but with direct positive paper my safelight will fog the paper within 1-2 minutes.
I recommend buying from Freestyle unless you need fast shipping, then order from B&H. Both are still doing normal shipping for online orders but are closed for in-person pickup due to the coronavirus