Windsor followed by one of Nottingham/Wilko/M42, which are generally regarded to be at least equivalent if not actual repacks of Nottingham. In fact you could use any of them (Wilko being the obvious one as it's the cheapest) to help flocculate any other yeasts that don't drop so well. The only problem with that is if you reuse yeast, you'll end up with a blend that will drift on repitching. But if you don't reuse yeast then it's a good solution.
We know most companies don't make their own dry yeast, they just repack ones from the big boys. So M20 is almost certainly a repack of something else, and Munich Classic would be an obvious choice for a Bavarian Wheat even if we can't say for sure at this stage. See this table for some pretty educated guesses about which strain correlates to which :
https://docs.google.com/spreadsheets/d/16XRUloO3WXqH9Ixsf5vx2DIKDmrEQJ36tLRBmmya7Jo/edit
Also this thread on HBT :
https://www.homebrewtalk.com/forum/threads/dry-yeasts-identified-your-opinions-please.670466/
The de Struise thing is only internet legend, but I offer it FWIW - they certainly make great beer.
I've found that with eg Chinook the biotransformation means you lose maybe 20% of hop intensity, but it turns the grapefruit of Chinook into something more limey and complex.