It's very unlikely there's a GUI tool that will do this unless you write one yourself, that sounds like a very uhhh, unique naming scheme. You can sort them using a shell script:
for file in *; do
name="${file%.*}"
suffix="${name: -2}"
printf '%s\t%s\n' "$suffix" "$file"
done | sort
Alternatively, modify this so that it will create symlinks in a new folder that have names that will get sorted correctly in whatever GUI tool.