Before GFM decided to directly refund everyone, their plan was to redirect any non-refunded funds to charities of the choosing of the organizers of the GFM. The only way they would go to left-leaning charities would have been if the organizers of the GFM were left-leaning and chose that
The charities were going to be selected by the convoy but "approved" by GFM. Obviously there's no public list of charities GFM has "approved" in the past but it goes without saying that only left-leaning charities make the list.