I think for Walk Away Renee the obvious link is to Rickie's version, since she was, along with Bowie, the biggest single early influence on Stina:-
https://www.youtube.com/watch?v=lSgO-gFnpSk
The Suede one is more obvious, but then again that nursery-rhyme melody (up a bit, down a bit) occurs in millions of songs and so is part of the collective unconscious.
I wrote a series of songs for a children's festival three years ago, and the melody for the last one just came to me one day, complete. I have a hunch that it might be derived from another song lurking in my subconscious memory, but I haven't discovered what it is yet (if it is indeed a 'quote').
I think the tiny little riff in 'Always crashing' which crops up in a similar way on Lori, is pretty bog-standard, so I wouldn't necessarily cite that as a direct quote; but I reckon the naff plastic sax SOUND on 'Lori' has a direct forebear in Bowie though; he was a pretty naff sax player himself but used his limitations really effectively, including the 'plastic' tone.