I used to like Dekang Ry4 as well but it's been a few years since I vaped any. I'm going on memory here but I don't know of anything that would be spot on. However the good news is that there are several really good
tobacco flavors to choose from anymore. Add your favorite vanilla and caramel and Bob's your uncle.
I'd suggest starting with Hangsen Ry4. It's sort of like the original Ry4 from Dekang except better
tobacco imo. It's a little light in vanilla and caramel for my raging sweet tooth but lot's of folks love it, plus you can always add a little vanilla and caramel to it, which is what I did.
If you go to my posts, you'll see several ry4 type recipes. Also there's a huge Ry4 roundup thread that has dozens of great recipes.
Good luck and keep us posted.