If interested, there was a post on Timothy Matlack’s great penmanship with writing the Declaration of Independence: https://prologue.blogs.archives.gov/2021/07/01/the-power-of-...
This is a fascinating aside that I'd never considered before (and I did not know that the signatories were kept secret for some time). Thanks for the link.
I wonder if keeping the signatories secret was done to temporarily give the appearance of unanimity, since some congressmen refused to sign.