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by scrollaway 1349 days ago
A good starting point is the YouTube channel Cracking the Cryptic, linked below, which you may already be familiar with. He does superb sudokus which employ advanced techniques. This includes a LOT of variants.

Variants may be a turnoff if you’re not starting light. My favourite very light variant is this one:

https://youtu.be/QNzltTzv0fc