Oddly enough this appears to be a difficult question. There is so much data being applied to the dangers of BPA, CPA, PVC, light and heavy metals as well as micro-plastics. For now polyethylene seems to be the best, but that could change.
My preferred water bottle would be made of "Nalgene" (brand name only). I would also chose one that is transparent so that I could tell how much water is in it. Also there are times I may have to drink wild water and transparent or semitransparent Nalgene would let me see the success of my water treatment/filtration.
My bikes are so Frankenized that specific bicycle logos are no longer a factor...
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