Those are also 3rd party companies who terminate TLS sessions on your behalf and thus have access to your private keys. Seems like they could secretly decrypt and copy your traffic at least as easily as Cloudflare could. Even leased managed hardware requires you to trust the company running the hardware for you.

You have to go all the way to installing and running your own hardware in a locked cage at a data center to even theoretically exclude all 3rd party access to your private TLS keys.