Is YNSE further along than RLS?
Well, it's had a complete EA (TPAP) since 2009 and they're designing the tunnels and stations. (Indeed, IIRC, the YNSE was the first project to use the TPAP process for its EA.)
The Relief Line (south) TPAP is out for review now, so it's catching up in that regard but YNSE has more advanced design.
Funding-wise, I guess they're effectively in the same place, essentially since (wisely, I think) they've been kind of paired as a package deal.