Please let me know about "Figure 19. Rheostat Mode Temperature Coefficient ((ΔRWB/RWB)/ΔT × 106 ) vs. Code " described on p.15 of the datasheet.
If you look at the datasheet of AD5121, the horizontal axis of the above items is data of AD5122 and AD5142.
I believe this data is common to AD5121 and AD5122.
So this is a mistake?