I might have a little extra money to spend soon so I'm looking at the possible options.  I'm thinking about getting a bolt action that's left handed with a threaded muzzle (for suppressor) and has factory peep sights.  I would prefer it's chambered in .308 or at least something that has a little more kick than .223/5.56.

So far the only one I can find that meets my needs is the Ruger scout rifle.

Any other recommendations would be appreciated.

https://www.tikka.fi/en-us/rifles
Tikka T3 compact Tactical should have a threaded barrel and may be available in a left hand version many of their high caliber rifles come in a left hand version.

GA Precision custom

The Savage M11 has lefty options for you. They're great starter platforms... slap your preferred stock or chassis on the barreled action and rock and roll.

If you need help and haven't already chosen your solution, feel free to reach out to Right Brain Armory, they'll help you select a good lefty gun.