There has been an effort to standardize MNDAs with oneNDA ( https://onenda.org/ ), at least in tech and I've seen it work well for SaaS deals. I think they also released oneDPA but I haven't used it yet to understand if it accepted or not. I wish more companies would use standard contracts, definitely helpful for smaller orgs with non-existen or very small legal teams. Now we just need them to be well accepted...
As you mentioned, there are some other efforts to create standards like oneNDA. We're sort of competitive with them, in a similar way that the Apache license is competitive with the GPL.
While there are important differences in our approaches and focus areas, I'm a fan of more adoption of standards in general and there's a lot that we agree on.
Some companies choose Common Paper over oneNDA because we offer agreement types that they don't, including a Cloud Service Agreement, Design Partner Agreement, and Professional Services Agreement. As far as I know, they only provide agreement templates and not software to manage them.