~snip~
You are an expert already and you know what close source wallets are. If you need another alternative, use Trustwallet if the coins you are looking for is not on Unstoppable wallet.
I'm really surprised that you give such a recommendation at all, considering that Trust Wallet is also mentioned in the context of Libbitcoin Explorer and so far $900k worth of cryptocurrencies stolen. There is nothing trusted in that wallet except the name, and besides, the company that privatized that wallet is really shady, not to say a harsher word.
[WARNING] Wallets created with Libbitcoin Explorer (bx) are insecure!