I successfully purchased Bitcoin in Coinbase Pro and sent it to my Electrum cold wallet.
Thanks to o_e_l_e_o's #6 post, it only cost 0.5% instead of 2%.
If someone else wants to do this, you should be aware that Coinbase blocks you from sending Bitcoin for at least a week.
I was blocked even though my Settings show that I had: 1) verified my ID, 2) been verified to "Send and receive cryptocurrency" and that "Send cryptocurrency" was "Enabled".
I was able to perform the "Withdraw>BTC>Crypto Address" action, and it looked like it had succeeded. But a few minutes later, I got an email from Coinbase stating "Your transfer was canceled". The message said unhelpfully that the transfer "… has been canceled for the following reason: You are currently unable to send Bitcoin. Please contact support."
Contacting support turned out to be difficult, but I eventually got this answer: "Your account is temporarily suspended from sending cryptocurrency off the Coinbase platform - this is to protect against loss, because once funds are sent off our platform, we have no way to reverse those transactions."

Thank you all for the great information and helpful suggestions. I have decided to go with Coinbase Pro for now, and may look at kraken and crypto.com in the future for better rates.
By the way, I found out that eToro does in fact let US users transfer Bitcoin from the trading platform to the eToro Money wallet. Customer Service told me that it is an error on their web page that the US is left out of the list of eligible countries for their Crypto Coin Transfer Service.

I want to purchase Bitcoin with U.S. dollars from my bank account and then transfer them to my own wallet, so that they are not held by an exchange. I have already set up an Electrum wallet (both cold and watch-only).
It looks like I can do this with Coinbase, although they are currently charging 0.5% in spread and 1.5% to transfer to a wallet.
I looked at eToro, but it seems that they do not allow U.S. users to transfer funds from their trading platform to their eToro Money wallet.
Are there any other options I could consider?