
Hi @Brian Curtis ,
Per my research, there is no available OOTB option to hide modern web parts in SharePoint Online. As a workaround, you could use Modern Script Editor Web Part with CSS code to hide the web part you want in modern page.
1.First, you have to Add The Script Editor Webpart back to SharePoint Modern Experience.
2.Please check CSS Style for the web part.
3.Add display:none to this CSS Style in the Script Editor Web Part. Publish the page then the web part will be hidden.
References:
https://social.technet.microsoft.com/Forums/en-US/9aacc9e4-e8c1-4aeb-8527-3549630aeca1/hide-modern-web-part-code-snippet?forum=onlineservicessharepoint
https://medium.com/niftit-sharepoint-blog/add-the-script-editor-webpart-back-to-sharepoint-modern-experience-688a7b7208e4
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