TLDR DIY Peephole WyzeCam v3:
For anyone interested in replicating my setup, here is the link for the fusion file. You can download it as an STL and print it or as a Fusion file if you need to make any modifications for your peephole dimensions.
File: Fusion
And the 25mm lens I used: https://www.amazon.com/gp/product/B07MNT1ZK2/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1