Conditional Item Display based on Tab Selection in PowerApp Gallery

Per this brilliant instructional video https://www.youtube.com/watch?v=1o2L0DADzKQ by Reza Dorrani I created collection colTabs to display different SharePoint List items in a PowerApps gallery. The OnStart property for App is this collection colTabs (smaller portion shown here):

ClearCollect(
colTabs,
{
    ID: 1,
    Name: "All States",
},
{
    ID: 2,
    Name: "East Coast",
},
{
    ID: 3,
    Name: "West Coast",
}

);

The "Name" from above are choice values from a SharePoint List regionsUSA.

So far in the main gallery I have the Items property as:

If(varTabSelected = 1, regionsUSA)

...and that is working fine displaying all items in the first tab. How do I expand the above If statement so that from the same SP List, if varTabSelected = 2, then only East Coast items are displayed, if varTabSelected = 3 only West Coast items are displayed and so on? Somehow I am having trouble pulling the choice items from the List so I am stuck.

Thank you.