MarkMSX/TheElectricUnderGround
https://www.youtube.com/watch?v=4NgX_eN3gj8
Mark sees through much of the gunk that is plaguing game design, chiefly among Japanese action genres. He actually plays games and is extremely good at them. Not good in the way casual players think where people are impressed with 1 sloppy, normal mode playthrough of DMC. Mark is a Virtua Fighter warrior, someone who can 2-ALL DoDonPachi, loops Demon's Souls, and beats Ninja Gaiden 2 Master Ninja without dying among other highly difficult gaming accomplishments. He gets into the nitty gritty and his reviews are not typically just reviews on a singular game, but rather an expanded dialogue on the climate of gaming critique and pitfalls of contemporary design sensibilities. I don't agree with everything but I like the cut his of his jib. He has got me to think differently about how I engage games, gotten me to play more games, and unwound mental knots about more difficult aspects that used to push me away.
ThePlinkster
https://www.youtube.com/watch?v=jbEhTA-liQk
Plink is a fresh channel with under 1k subs but he is very articulate and his simple, no frills editing is nostalgic. Similar to Mark, he gets into the overlooked, often scoffed at nuts and bolts of action design. He focuses more directly on just the game rather than broader design schools and "game politics" of the industry as a whole. His classic Zelda reviews (all he currently has) and refreshing rejection of the modern releases in the series are fascinating. He really shows he understands what made these games tick and the culture they were conceptualized in. It's clear he has played, replayed, and mastered these games as opposed to modern Nintendo fans that get filtered and brand them with any one of their favorite empty, cope descriptors: "clunky/dated/aged". Plink is off to a great start.
Liliru1
https://lilura1.blogspot.com/2021/08/Morrowind-overrated.html
Lilura's commentary is a lively brutality. She has a searing disdain for the Western RPG genre after the early 90's and very astutely dismantles the design of modern, "consolized", celebrated works in a way that's compelling, unintentionally hilarious, and hard to argue. I learned a lot about classic cRPG's and old, rich Western PC gaming history that is often snubbed and buried in favor of easily digestible console RPG's of the modern day. She swears by written critique and is extremely traditional in her gaming habits. She's not entirely incendiary and when she's positively reviewing things she keeps the tone mild. She's very fair and gets the most out of her blogging style.
Nerrel
https://www.youtube.com/watch?v=653wuaP0wzs
Finally Nerrel.
Nerrel is highly disagreeable with many of his gameplay critiques. He demonstrates a fairly run of the mill palate and very low gaming skill. I find this colors his reviews in a way that makes for mediocre commentary on anything that requires more effort than 3D Zelda. His StarFox Zero review for instance is genuinely garbage as he, like most, did not understand at all what that game was trying to accomplish. What makes him valuable however, is that he is not just a simple enthusiastic gamer. Nerrel is a master artist (that I suspect boasts credentials in the arts to some degree) and is knee deep in the Nintendo modding scene. He is extremely proficient in texture packs having redone all of Majora's Masks's textures by hand for an HD fan remaster that took him 5 years. He was working on a similar project with a team for Metroid Prime and he provided an impressive, dynamic map for the Majora's Mask recomp among other contributions for preservation. This gives him very unique insight into literally how games and their platforms are designed.
He's talented, educated, and very entertaining even when he's saying complete inaccuracies about a game's design. You just need to be wary of his missteps but, that's no different from the best reviewer. His rebuttals in favor of emulation against corporations and their bootlicking fanboys are also very insightful and made more trustworthy considering the work he provides in that field. He does have more good reviews than not, but truthfully I'm not following him for his reviews predominantly to begin with.
I don't really like too many other YouTube reviewers. Most are sensationalist, low skill, and tasteless with a penchant to value obnoxious, meme editing over substance and honest critique. Many have the same milque-toast, puddle deep "analysis" of game design that proves they don't actually put in time required to actually make astute supposed "critical" pieces and don't have any other related background that can give them some unique alternative talking points. So I find most to be hot air. But these 4 are my current favorites.