Yes, you can easily check the voice you used for any video by going into the editor.
Here's how to find it:
Go to your video dashboard (Home or “Your Videos” tab).
Hover over the video and click the three dots on the top-right.
Choose “Edit” to open the editor.

On the left-hand side menu, click on the “Voice” tab.
At the bottom of the Voice panel, you’ll see the voice name and language displayed (like “English – Antoni”).

