Hi @ericmsilver ,
You have enabled the Power FX Option while creating a new flow as shown in below image 1;
Image 1:

When you enable the power FX option you will get only these actions under variable as shown in below image 2:
Image 2:

If you dont enable power Fx then you can see all the action regarding the list in variables as shown in image 3:
Image 3:
Thanks,
Vishnu Reddy
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