Which Apache CF module? There is one module and it just rewrites IP addresses and doesnt add and such data. Also, that string does not seem very Cloudflare related, furthermore if requests pass through that module it, it will always be added.
" X-Middleton/1" - my mistake, it is added by Ezoic CDN, but it means that requests arent direct.
https://rehmann.co/blog/x-middleton1/