Update app.py

app.py

@@ -603,7 +603,7 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
         gr.Markdown("### Guest Performance Timeline")
         with gr.Row():
             with gr.Column(scale=1):
-                guest_select = gr.Dropdown(choices=sorted(guest_by_channel['guest'].unique().tolist()), label="Select Guest")
+                guest_select = gr.Dropdown(choices=sorted(guest_by_channel['guest'].unique().tolist(), reverse=True), label="Select Guest")
                 timeline_type = gr.Radio(
                     choices=["views", "cumulative"],
                     value="views",