I can only say that I agree with you.
It's a shame you used the same letters for your examples instead of continuing up the alphabet, which would have made it easier to identify the words.
In my southern English, most of the Schwa sounds in your examples are elided in normal speech. Some of the words can be pronounced more carefully and still sound quite normal, e.g. separate, several, different and counselor. I find that chocolate, basically and comfortable sound strange if fully pronounced. I never pronounce vegetable as /ˈvɛdʒətəbəl/ but some people do. It sounds wrong to me.