Hi@MikeRooker!
First of all, hope you and your people are well
Now let's talk about the issue
"sending an individual email to every user in in the "person column field" (Site Owners1). But how can I send the email to them all at the same time, letting them see who also received the email?"
So my suggesrion is to keep 'Apply to each' and add an 'initialize variable' type array name 'myTargetEmails' just before it.
So use 'Apply to each to iterate all over every user, by adding inside an'append to array variable' value email from current user
Now remove 'send an email' from Apply toEach.
Then outside Apply to each add a 'Send an email', assignt to To input the following expression:
join(variables('myTargetEmails'),';')
Not with my laptop, hope it helps
