Text style is often not enough to achieve a particular style, you often need to set color too. In this case, I suspect they use Google Material Components styles. It’s hard to judge the appropriate font size here given your font scale, but here’s what I think they use:

• Title

  android:textAppearance="?textAppearanceBody1"
  

• Subtitle

  android:textAppearance="?textAppearanceBody2"
  android:textColor="@color/material_on_background_emphasis_medium" 
  

They also use a special font.