High yield what? Your question is not tax-related but:
Bonds are not yielding 1-3% interest currently (see the links below).
https://treasurydirect.gov/marketable-securities/treasury-bonds/
So, what is your question? Which is better?
The yield on a savings account can change, for one thing.
What is the benefit of a bond for taxes if the interest rate is so low compared to a high yield savings account which is hovering 4.25% vs. bond that's less than 3%? That's what Im wondering because it seems like you don't earn as much money right now if you put in a bond vs. a high yield savings account, even if the number changes.
Bonds are paying over 4.5% currently. Where did you get 3%?
In the last 10 years these funds have only earned less than 2%
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You are now referring to bond funds and even then over a longer time frame.
As interest rates increase, the value of bonds generally decreases (it's an inverse relationship).
All of the funds you mentioned are currently yielding over 3% anyway.
Also, if you go back just a few years, you'd find that your savings account would have yielded well under 1% at that time.
There are entire books written about investment strategies. This is not the place. But your comparison is apples to oranges. The average yield of even a high yield savings account over the past 10 years is probably well under 2%, because interest rates and inflation were very low for a long time. You can't compare a 10 year average performance of a bond fund with the current savings account interest rate.
Also, the performance of a bond fund has very little to do with the yield of any specific bond. It also depends on price changes of the bonds, which depends on various market forces.
A bond fund spreads out the risk. A well managed fund will earn more money over time than a savings account. The trick is to find that well managed fund. If 2015-2021 were slow years for bond funds, look for the fund that made 3% instead of 2%.