Mckenzie QTIP Bond ETF

It really depends on what you're looking for. This is a bond fund consisting primarily of US Treasury Notes and bonds. It's ultra conservative. It's max drawdown is 12%, which occurred during the March crash of 2020. Considering most indexes fell more than double this minimum, you can tell the conservative nature of it.

With this, you're ultimately going to yield less than buying say a corporate bond fund, but it's going to have less risk as well.

There are SO many bond funds, bond strategies and just fixed income strategies overall that it's impossible to provide a shortlist without some details. But if you're looking for ultra conservative exposure to US fixed income, QTIP is a solid fund.