It usually never a good idea to mix RAM sticks even if they are the same brand.
I did it (same brand, same model, same speed, same timings) but I got lucky and it worked.
A 4x8GB kit is tested so those 4 sticks will work.
Using different brands is almost impossible to force them to work together.
Besides . . . Why do you need 32GB RAM?
16GB is enough for most people unless they have a workstation related task or a server that needs that much memory.
If you want 32GB just because, Don't bother. It wont make your PC any faster.