User allocation to project should not see other organization and resources

I have made changes in Specific Access for Organization and Resource and I am getting result what I want to configure for other projects.

There is no restriction on visibility for resource and organization unless you explicitley define some in specific access rights.

ame type of access require for Products listing....

For product, it is different, as resources are not directly linked to products.
In fact project leaders have visibility on all products and will select products and / or products versions linkedto the project. This will limit list of products and versions listed on tickets and activities

Also In project (While login with Project Leader profile) I am able to see other resources in Sponsors details and other customer details. Please help what to configure so that I can see only Project specific sponsors and customers.

Sponsor is a contact, not a resource, and there is no restriction existing today on this list.

In Controls and Automations --> Indicators

"Indicatros" lists all indicators whatever the project, and should be given to Admin profile.
For project leader, we recently designed "indicators per project" that will use project selection.

Allowing my client's project leader, accessing this tool should not see my other client sponsor/customer list as well as other clients products listing.

That's why in most case External project leader won't have access to project object, but to items of the project only (activities, milestones, tickets,...)
For instance, I won't like customer to see whole team (allocation to project), margin, quality indicators, sub-projects, ...

And if your need it, you can hide some fields on a given screen for a given profile with our Screen Customization plugin.