Of all my cameras, the Olympus E-M1X is easily the least fossil-y. It was announced in January of 2019, meaning it's barely over five years old; a spring chicken among the stringy old hens and roosters in my camera coop. They're still available new-in-the-box, although used copies are only about a third the price of a new one.
Still, although it was announced in 2019, it uses the same Sony-manufactured 20MP LiveMOS Four Thirds sensor first introduced in the 2016-vintage OM-D E-M1 Mark II, albeit backed up with dual TruePic VIII image processors, which gets it close to at least honorary fossil status.