It is definitely not a rose comb. I can see enough in one photo to be sure of that.I went and looked more closely and you’re right it’s mostly just black accents on the wings. And I thiiiink it’s a single comb (not rose) but it’s still so small it’s hard to tell.
If you can get a better photo of the comb, I might be able to tell if it's pea comb (Buckeye) or single comb (anything else.) I think it is probably a single comb, because of the points I see in the last photo, but I can't be quite sure. I know chick #1 has a single comb because I see points on top of it in the first photo, and I can see how skinny it is in the second photo (with the spread wings.) Single combs are narrower than pea combs, are usually taller than pea combs, and have more obvious points than pea combs.
Yes, you will be able to tell more when it is full grown, and some of those will be much more obvious within just a few weeks. If you get a nice front photo of the comb, there's a good chance I can answer the pea/single question already, and that will settle part of it. (I know it is hard to get comb photos of chickens because they keep moving their heads, and small chicks are harder because the comb itself is so small.)Do you think once it’s full grown I’ll be able to know what it is more definitively? I feel like right now I wouldn’t be able to tell the difference myself between buckeye, RIR, NH, ISAs, etc