Hello, In my W2, line14 I have something that says "CA VSDI". I'm confused which category should I choose for that. Is it CA SDI, CA VPDI or something else? Thank you.

No it is not CA DSI. It is Voluntary State Disability Insurance and it is NOT a deductible state/local tax like regular SDI.

You should select 'Other Not Classified' when entering Box 14, of your W-2.