Word Choice – ‘On This Spreadsheet’ vs. ‘In This Spreadsheet’

grammaticalityprepositionsword-choice

There are two parts on this spreadsheet

There are two parts in this spreadsheet

Which is grammatical? And what is the preferred usage?
By parts I mean some data or information（pictures, production's name, etc.).

The two statements do not imply the same.

There are two parts on this spreadsheet.

This refers to parts of what is on the spreadsheet, say a certain table of figures.

There are two parts in this spreadsheet.

This refers to parts of the spreadsheet itself, perhaps sets of columns, sets of rows, or such.