Guidance on making the switch from Windows 10 > Ubuntu 18 (gaming only)

They there!

So I've used Linux on and off for about 10 years. I've finally decided to make the switch for good and need advice regarding my games.

I have about 3TB of games installed on my Windows box right now. The majority come from Steam, with some origin, Uplay and gog ones thrown in.

I want to use native Linux versions where available, but don't want to re-download games for WINE that I already have.

Info:

• My games are currently installed on two NTFS 4TB drives. One is just a backup/clone of the other. These drives are separate to my OS drive.
• I have a relatively slow internet connection, so if I can avoid downloading the non-linux compatible games again (i.e. the ones I'll be running via WINE) that would be great.

Can I keep these games on an NTFS formatted drive and "import" them into WINE?

Or format one of the drives to EXT and then copy over the existing games from the NTFS drive?

What are my options here?

Thank you