In the cases where I found the maximum amount of private keys supported, I display it like "YES (3)". For example, Keystone 3 Pro.
I think we are talking about two different things, and I was talking about multiple
seed phrases, not about multiple
private keys.
If I am not mistaken Coldcard devices can only store one seed phrase at the time.
Keystone can store 3 seed phrases in the same time on one device, and Era up to 10 seed phrases.
Maybe you wanted to combine multiple private keys and multiple seed phrases into one category, but this can create confusion.
But a seed phrase is a representation of a private key. You only need to know how many private keys can store a wallet, and that is what I am showing on "Multiple Private Keys" row. I don't have a Multiple Seed Phrases row.
Coldcard can store multiple private keys (or seed phrases) in the SeedVault.