Taking everything you said into consideration...

For the smaller caliber rifle, I’d go Tikka T3x, in .308 or 6.5cm.
As for the plastic trigger guard, if it bugs ya you can always swap it out for an aftermarket metal one. Plug n play, easy to install. There’s a couple different companies who make em, here’s some made in Montana-
https://tikkaperformance.com/Tikka-T3-T3x-Bottom-Metal

For the larger caliber rifle(and to scratch that Mauser style CRF itch)... I’d track down a Ruger M77 Hawkeye all weather ss. They’re easily found(both new & used) on the online auction sites, gun shows, and some retailers still have em in stock.
(Although that CDNN one lists as a 20” blued barrel, most of the stainless versions I’ve seen are 22”+).
Whichever caliber you like. I’m fond of 30-06 myself.