Schild bach wallet is an open source and transparent Wallet. It is a software and Bitcoin only wallet. Any user can send and receive Bitcoin without the use of KYC.
From my last research, I saw that it has some features that makes it very easy to scan private keys and transfer funds out.
I also noticed that the wallet Is not too large to download. Just in a few minutes and you are done. Many people around the world use this wallet.
It is only available for mobile devices. Personally for me, I think that there are a lot of options in the market though the wallet has achieved a regular portfolio of users.