UITableViewCell Separator - Hide Separator or Change Left Side Spacing - YouTube
Craig Hockenberry on Twitter: "You may notice a gap between section headers. This is an example of what I saw in our @linea_app - the yellow gap is new in iOS 15.
ios - Why is there extra padding at the top of my UITableView with style UITableViewStyleGrouped in iOS7 - Stack Overflow
Table View Guide | CodePath iOS Cliffnotes
4.9. Constructing Headers and Footers in Table Views - iOS 6 Programming Cookbook [Book]