200 OK redirect instead of 301 redirect (.htaccess)

So I’ve tested the two below codes in my .htaccess:

1. Produces a 200 OK redirect finally

RewriteEngine On
RewriteCond %{HTTPS} off
RewriteRule (.*) https://%{HTTP_HOST}%{REQUEST_URI} [R=301,L]

2. Produces a 200 OK redirect finally as well

RewriteCond %{HTTP_HOST} !^www\.
RewriteRule ^(.*)$ https://www.%{HTTP_HOST}%{REQUEST_URI} [L,R=301]
RewriteCond %{HTTPS} off
RewriteRule ^(.*)$ https://%{HTTP_HOST}%{REQUEST_URI} [L,R=301]

I’ve used a redirect checker here: https://www.urlitor.com/ to check the URL and it states that it is a 200 redirect finally to HTTPS.

What is the correct code for .htaccess?

My site is www.inkth.com

There’s also an unidentifiable error which makes the site redirect to the www.inkth.com/register page for some users on certain devices, I’ve noticed.

Is there anyway to fix this?

I’m using Google experiments if that may be the issue.