@aburka don't blame you at all. All I've seen about Molly seems to indicate high safety/security- it appears to be well-regarded in the grapheneos forums/community. Its selling point is being a hardened fork of the official Signal client, featuring things like at-rest encryption, ram wiping, etc. And if you install Molly-foss (the only version available in Accrescent store) it replaces proprietary blobs that Signal depends on for notifs/location services with secure, open-source alternatives.
their website is
https://molly.im & the link to the project's git repo is
https://github.com/mollyim/mollyim-androidfwiw, I'm not a dev or contributor to the project, just a satisfied user. definitely look into it yourself before trusting it with your data & access to your signal account.