When it comes to naming NFT tokens and using symbols in different contracts depends on the use-case, both methods of using the same Name and Symbol or differents has their pros and cons :
If you're using the same name and symbol accross all NFT's can make the brand more recognisable, meaning a better brand identity, owners familiar with a set of NFT's will more readily recognize another set and the User-Experience overall is simplified.
The main problem will be the lack of specificity, meaning people could be confused if the tokens serves different purposes, with differents attributes or belong elsewhere.
By using different names, each collections would have its own specificity, meaning you customers can have big set of choice. the cons would be harder for newcomers to identify the brand and can be more complex when users manage the assets.
A viable strategy could be to manipulate metadata and create related names, offering a mix of uniform and diverse.
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