[Serious] Actually fully open source wallet?

So I've been trying to look for a fully open source wallet that doesn't only support bitcoin... and am struggling. I'd like a wallet that I can fully self audit and verify both circuit wise and firmware wise.

I've identified the following so far:

BTC Only

• Blockstream Jade
• Seedsigner
• Keepkey

Open source software/firmware but not hardware

• BitBox
• KeepKey
• Keystone
• Onekey
• Dcent
• Safepal
• Satochip
• Tangem

Fully closed wallets

• Coolwallet
• Ellipal
• SecuX
• Arculus

Then there's ledger... do i even have to say anything about ledger?

The only real contenders i found were:

Trezor - Requires lots of fine SMT soldering, one person said it took them ~10 hours to make a single one by hand

Prokey - Looks to be all open source, but requires a $500 a month subscription to export production files

I'm kinda surprised that there isn't anything that fufills the requirements of being entirely open source, supports more than one coin, and that can be assembled at home without hundreds of $$$ in equipment or software.