I have not used either of these on the Windows platform, however One Password's developer was responsive to requests to make there application accessible on IOS and MacOS. I believe there was another query about 1Password on the NVDA mailing list in the last week, so you might want to review the archives.
On 10/7/18, 11:34 AM, "email@example.com on behalf of Mike Sedmak" <firstname.lastname@example.org on behalf of email@example.com> wrote:
I am considering changing password managers and would welcome feedback
on the accessibility of lastpass and 1Password on windows.
Any recommendations for or against either based on accessibility?