The EFI partition being at the end confused things a bit. As far as I am aware, you would have ended up in that configuration only if you used mbr2gpt or a third party tool to convert your disk type. Also, your recovery partition appears to be hosed, as the filesystem type is RAW.
At this point, first make sure your backups are current, just in case.
Then I'd suggest deleting that last RAW partition (since it won't do any good, and you can use your Windows install USB for recovery purposes). Then use a third party partition manager tool (there are free ones, e.g., Minitool or AOMEI) to move the EFI partition to the right, to the end of the disk. Then you'll be able to extend your C: drive.
As far as being unable to delete your tier, that's because your tier is your boot drive.