Seruously what kind of logic is thisljhdm
First of all, get your fact straight.. LSG actually peaked at #1 on non-ul based charts that contradicts to what you say about it not hitting #1 anywhere and guess what song blocking it from #1? Yeah it's only dynamite, the bigger song and the biggest since the reform. How many times do I have to point out that LSG should be considered national hit for it's record breaking longevity and not bc of its explosive start.
With uls being low rn, a few thousand of uls especially a 50k uls makes a huge difference on charts so stop being stucked on the old chart hag! And with Melon, letting us see the total uls now, these daily uls is now becoming for chart purposes only. I remember, uls starting to hit the lowest, few weeks before dynamite when the #1 song at that time was only getting daily average of 400k - 350k uls. Since then, there's only a total of 3 songs that have reached 3M uls and that's dynamite, LSG and the refund sisters songs aka the song that almost hit 1M listeners in a day. As said, people would've consider RS's song a national hit, if only it had longevity. LSG as the song that haven't reached top 1 nor able to surpassed 700k uls in a day, yet it is able to managed that much uls. So to answer your questions, no, those old songs charting right now won't be considered national hits, most of them haven't even reach 3M listeners despite being a year older and they didn't stay a record breaking weeks on top 10 either while LSG has both the achievements. And trust me, it won't be long enough till reaching 3M uls in few months will be considered a huge achievement in Melon.
Anyway I consider, Blueming, Eight and Meteor to be national hits, they are in the same vein as Akmu's HYLTHB and now BP's LSG. Yeah not all national hits, should've insanely catchy choreo to dance to in public, most national hits outside the kpopsphere are mellow song and ballads. I still stand to what I believed that OST shouldn't be considered national hits. While the other songs you've mentioned doesn't have ground breaking achievements nor insane uls despite for it being released when uls didn't hit that low, also HYLT is bigger and more impactful than both but no, I dont think she is a national hit.