View designer strange join syntax
This is just Standard SQL join syntax with the optional parentheses removed:

SELECT *
FROM tableC
LEFT JOIN 
(
    TableB
    RIGHT JOIN TableA
        ON TableA.ID = TableB.ID
)
ON TableB.TypeID = TableC.TypeID


If you don't like the syntax generated by the SSMS view designer (which is buggy and rarely updated anyway), simply write the views by hand using regular T-SQL.

Some people refer to this syntax style as 'nested join syntax'. Example blog post.