Hahnemuhle Photorag Pearl and Hahnemuhle Photorag Baryta.
+1, the first two papers that come to mind for me as well
Also, Canson Platine, Red River Palo Duro Soft Gloss, Epson legacy Platine.
There are others as well no doubt. Aardenburg Imaging & Archives needs to start compiling a list. It only takes time and money
Easy to sort OBA-free media with a low cost UV-LED "flashlight". Or refer to the Aardenburg light fade test database or Ernst Dinkla's extensive spectral data sets for modern media at
http://www.pigment-print.com/spectralplots/spectrumviz_1.htm for guidance on OBA-free media. Choosing OBA-free media is thus a straight-forward and enduser-verifiable way to avoid media which exhibit light induced low-intensity staining (LILIS) regardless of any TiO2 content.
If the media is both OBA-free and TiO2-free, then a spectrophotometer like the Xrite i1Pro2 can pick that up by inspecting for fall-off or lack thereof in the 380 to 420 nm range. Both TiO2 and OBAs cause a sharp downturn in the spectral reflectance curve in this wavelength range, hence it is hard to deconvolute the curve if one or both are present.Thus, X-ray fluorescence (XRF) or other analytical techniques are required to identify the TiO2 in the presence of coatings also containing OBAs. That said, essentially all resin coated (RC) photo media contain both TiO2 and OBAs, hence as a class of media, RC photo papers all exhibit the LILIS media yellowing phenomenon to varying degrees and thus should be considered only moderately "archival" at best, non "archival" at worst.
The media manufacturers could help in a big way to sort these material choices out and provide more media that don't have the LILIS problem, but I'm not sure they would want to willingly share this information, and at this point in time, I'm not sure they even understand the LILIS problem exists....it all takes time. Don't shoot the messenger
cheers,
Mark
http://www.aardenburg-imaging.com