At question are the following lines in the Class Feature Variants UA
A wizard has access to the following feature.
1st-level wizard feature (enhances Spellcasting)
The following spells expand the wizard spell list.
[...] 4th Level Divination (divination, ritual)
and this text from the Ritual Caster feat
If you come across a spell in written from, such as a magical scroll or a wizard's spellbook, you might be able to add it to your ritual book. The spell must be on the spell list for the class you chose, the spell's level must not be higher than half your level (rounded up), and it must have the ritual tag. The process of copying the spell into your ritual books takes 2 hours per level of the spells, and costs 50 gp per level of the spell. This cost represents material components spent on practicing the spell, as well as the fine inks you must use to record it.
Under the UA version of Class Feature Variants can a non-wizard use the Ritual Caster feat to copy Divination after picking the wizard's spell list?