"Save as..." types are a lot in general and many of them are rarely (if not at all) used.
It is a lot time consuming to search among all types to find your choice.
Is there a way to hide some these types?
I mean to disable or hide some formats that i need from the dropdown menu.
No, this list is not customizable.
In SOLIDWORKS 2020, both the open and save as dialog file type lists have been improved to make them easier to visually parse as documented here:
2020 What's New in SOLIDWORKS - File Types List
For example, here is a screenshot of the same dialog you show above from SOLIDWORKS 2020:
Note that mine is in a dark color rather than light because I am using a dark theme in Windows and this dialog is a standard Windows dialog which SOLIDWORKS customizes with options.
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