K-1: These K-1s are in brokerage accounts in both my wife and my names. I funded and manage these accounts. Whose account do I tell TurboTax that they belong to?

Since you funded and manage those accounts, then you should list them under your name in TurboTax.  If your filing status is Married Filing Jointly, then it will "collectively"  be from both of you but just show up under your name.