try the two step process
-
with the crop tool you can bring your images to the same ratio
(apply the horizon tool afterwards / individually) *)
→ if the crop is well within the boundary of your image,
the change in size shouldn’t be dramatic -
with export you can resize them all to the same output size
→ e.g. longest side = 1920 px (and sharpen them accordingly)
*) after some further experimenting
Use the Twirler instead of the Horizon tool.
This preserves the aspect ratio (then showing up).