Photos with different angles are spam?

Be selective about which ones you submit from a series. If they're different enough, consider spreading them out over subsequent submissions.  Use unique metadata.

• https://helpx.adobe.com/stock/contributor/help/how-to-submit-distinct-content.html

Hope that helps.

Pick no more than 3 distinct versions from each set. In my opinion, yes, submitting all would be spamming.