Use Outputs of 3 Basic Table tool & combine it into one Excel sheet

[vishalnegi]

I am doing data massaging and as a result of this I have prepared 3 tables in 3 different Basic Table tool. Though each table follows different formatting, however each table follow same schema(i.e. same column header). I want to combine it into one table with data appended one below other along with individual formatting of each table

[alexnajm]

I would look at a Join Multiple to get them all on one line - you can join on Record Position if you don't have a key field to match on!  Join Multiple Tool (alteryx.com)

Then you use a Layout tool to stack the tables vertically

[apathetichell]

I'd use a union - by position. if they are already report snippets - I'd use a summarize after to combine them into one snippet.