Almost all the thru axles on Aliexpress have 1.5 thread pitch. Does anyone know any light thru axles that have 1.0 thread pitch for older Canyon? 50g a set or less.

It's not light 

Yeah all with 1.0 thread I've found are not that light. There are more expensive options made from titanium from Ridenow or Ti-master I was hoping to find a cheaper one.
For 1.5 pitch they are selling 50g set for under 30€ on Aliexpress I guess 1.0 pitch is too uncommon.

Perhaps look at it from another perspective.   Do a bit of research to see if there is a dropout available for your bike with a 1.5 thread pitch.  I purchased a frame with a 1.0 pitch and was able to find a drop out that fit my bike with a 1.5 pitch.

The reason I like 1.5 and 1.75 pitch better is that they are less sensitive to dirt dust and debris clogging up the threads.

Search for J&L thru axles, either on ebay on aliexpress. They have specific models for bikes.