To me all turn bolt and straight pull actions are modern . . . well sort of. Ultra Modern rifles by contrast fill a particular narrowly defined niche, but aren't much good for anything else like ultralight mountain rifles, beanfield rifles, dedicated 12 ga bolt actions like the Tar-Hunt, and rifles, regardless of action type, that are chambered for extremely powerful cartridges like the .700 Nitro Express, and the .585 Nyati.
Classic = single shots like Sharps, Ballard, Farquharson, & Martini, double rifles like Holland & Holland, Chas. Osborne, Joseph Lang, Westley Richards, and lever actions like the Winchester 71, 86, 94 & 95.
You are correct, as usual, Boomer. For me, however, I consider "modern" as starting from the era of accountant bean-counting and super mass-production. A time when humans stopped individually handling and finishing a rifle, however limited that human invention was.
M96/M98 factory sporters (FN, Husqvarna, early Browning, etc.), for example, were mass-produced, but even until the early-mid 1950's, involved final finishing by people, not machines or CNC lathes. I hold the FN commericial M98 action as still the very best possible basis for a custom build. In fact, I 'stock pile' the uber rare small-ring M98 variants for future non-magnum builds. Pre-64 Winchester, obviously largely based on M98 design, are in a similar camp for me.
While Tikka, for example, obviously have a winner with the T3, cost considerations were paramount into the action's design. It is one of few modern actions that work, work extremely well, and obviously are ultra-efficient to produce. Even with Tikka, I still drop a few factory 'cheapie' parts in favour for some high-quality aftermarket bling, but all-in-all, there's no shame in glass reinforced polymer magazines, and trigger guards-- most of world's militaries and police have gone that direction to varying degrees.
While I do appreciate some of the super expensive examples you note above, they are beyond my needs and/or desires, I simply don't hold them to the same regard. I do appreciate individual opinion and this thread has proven how varied our thinking works.
Thankfully, nobody has placed some real losers (will not name them) as their personal favourites, but I wouldn't criticize them if they did.
(yes, I am biased towards bolt guns..

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