Mienfoo/Timburr/Scraggy - Checks all of them. Counters all of them and heals on them. Nothing new was brought up.
Pawniard - All Pawniard are checked and a few variants are countered and Meditite heals its HP. Nothing new was brought up.
Dwebble/Tirtouga - Can switch into Shell Smash or Waterfall / Earthquake and Fake Out + Drain Punch lets it heal and KO. Nothing new was brought up.
Carvanha - Still checked by Meditite. Nothing new was brought up.
Chinchou - Still beaten 1 on 1 by Meditite. Nothing new was brought up.
Magnemite - Still 100% check to Magnemite. Can counter the common Thunderbolt-less Magnemite rather safely without SR up. Nothing new was brought up.
Trubbish - Trubbish 3HKOes Meditite and Meditite OHKOes back. Pure counter. Nothing new was brought up.
Porygon - Fake Out + Drain Punch always KOes Porygon and it can't OHKO it. Pure counter. Nothing new was brought up.
Ferroseed - Nothing new was brought up.
Munchlax - Nothing new was brought up.
Archen - Can still check Archen (Drain Punch, Bullet Punch, Bullet Punch beats the Berry Juice Acro variant). Nothing new was brought up.
Fletchling - 6.3% to check Fletchling. Nothing new was brought up.
Abra - Easily checks with Fake Out + Bullet Punch. Nothing new was brought up.

Croagunk - Can group with the other Fighting-types.
Cottonee - Can check with Bullet Punch / ZHB.
Drilbur - Counters without rocks up (which it usually is setting up anyway). Checks any variant.
Ponyta - We knew that already. Note: Ponyta can't reliably switch in.
Spritzee - Why on earth you think Meditite needs to check Spritzee is beyond me and the rest of the people reading this.
Vullaby - We knew that already. It also can't switch in.
Bunnelby - It's actually 51% chance to KO with Fake Out + Bullet Punch after SR. That's kind of ironic.
Foongus - Lol. Yea it can't switch in and Meditite has no trouble taking Giga Drain or Clear Smog.
Gastly - We knew that already. Also can't switch into anything besides Drain Punch.
Houndour - Houndour is checked.
Larvesta - Can't switch in if SR is up.
Lickitung - Pure counters Lickitung.
Lileep - Pure counters Lileep.
Slowpoke - We knew that already.
Snover - Pure counters Snover
Snubbull - Again, why in the fuck are you switching Meditite into this? You get switched into. And I believe Meditite 3HKOes.
Zigzagoon - You win, lets ban everything that doesn't survive a +6 ExtremeSpeed. Still beats it one on one.

When something beats like 27/34 top Pokemon 1v1 and checks/counters ~16/34 of them it's not just "another good Pokemon".