rcm (from 2015)
The exam syllabus of Canada's, Royal Conservatory of Music is huge. Rather than change every few years, this one lasts for a decade or so, and even then many of the pieces will remain the same. This gives teachers plenty of variety; no need to keep teaching the same few pieces, nor do they need to keep buying new exam books! So the RCM provides a fantastic resource for anyone, teacher or student looking for graded piano music. There are 10 levels, plus 2 preliminary levels and a diploma at the top. Broadly speaking the levels follow those in the UK, though perhaps +1/2, so ABRSM G2 = RCM Level 3.
If the music is in the public domain, I've given easy access to the sheet music which, in most cases, I will have found on www.imslp.org.
So here are some of the pieces. I hope you find what you're looking for, but if not and you're a subscriber, you may like to commission one?
Mozart, Wolfgang Amadeus
Rondo (Allegretto), K.15hh
Alone at Sunset, no.10 from Sea Idylls
New Orleans Nightfall, from New Orleans Jazz Styles
Sonatina, no.18 from Thirty Children's Pieces, op.27
No Worries, from Even More Little Peppers
Trees at Twilght, from Impressions for Piano