If we are recommending brands, may I suggest Nikura for oils? After years of using Neom and Aromatherapy Associates I now use Nikura ones, as they are very much cheaper for basically the same thing.
They do essential oils, fragrance oils blended from essential oils and perfume dupes. I can’t speak for the dupes other than to say that my DIL loves the Black Opium one, but I have several waterless diffusers at home, and use Nikura oils in all of them. Highland Spring is great in bathroom/lavatory settings, and the winter scents are coming into their own now.
Obviously you can mix your own, too - cinnamon bark with a bit of patchouli added is another favourite of mine, but their Christmas ones are also lovely.
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