Where are the other supported Rclone backends ?

[Nusic Rusko]

Hi,

I see there is a list of storage interfaces that are "presumbably" from Rclone:

Amazon S3
Backblaze B2
Box
Dropbox
FTP
Google Cloud Storage
Google Drive
Google Photos
HTTP
Hubic
Mega
Microsoft Azure Blob Storage
Microsoft OneDrive
OpenStack Swift
pCloud
SFTP
Storj iX
WebDAV
Yandex

However, where are providers like SIA or OpenDrive as seen in the list of backends? > https://github.com/rclone/rclone/tree/156c372cd760460f419708c75506434c48decfc8/backend