I've found quite a few Magic Tower / WWA / Tower of the Sorcerer games (some of these you have already listed):

Soulestination - Probably the best listed here. Unique cycle of powering up/down constantly. Great story / boss fights.
Tactical Nexus - Amazing in concept and amount of content but the price is insane and will only get worse over time. Don't recommend on the stupid crazy price scheme alone.
The Dungeon of Lulu Farea
Deep Rune - unique platforming elements
DROD RPG: Tendry's Tale
DungeonUp - Rougelite / random elements
Dark Tower - Don't recommend (might not even work anymore)
The falling tower - free!
LoliTower
Magic Tower (Destroy the Wormhole)
Malice in Magic Tower -玲鈴魔塔-
Myth Bearer
Neko Dungeon - movement is very janky (optional? adult themes)
Six Braves - free! Paid dlc for other classes (basically game modes)
魔塔地牢 - I think its an earlier version of Six Braves. Play Six Braves instead. Chinese only
Tower of the Alchemist - I think this is just a bad copy of the original. Don't recommend.
做了个魔塔 Just made a MageTower - free! Chinese only
通天魔塔-MagicTower - I think its a port of a phone game. Don't recommend.
魔塔2018 - I think this is a copy of the Magic Tower 2018 that pops up in some places. Chinese only

Then there are some Magic Tower likes:

Magirune - Basically a Magic Tower with tight level/damage scaling. free!
Magirune 2 - Again basically a Magic Tower with tight level/damage scaling. Much longer than the first.
Evil Maze - action elements (adult themes)
Evil Maze 2 - action elements (adult themes)
Mage Tower - Magic Tower segments mixed with some action segments. Not sure if I can recommend since it doesn't feel like a complete game.
Magic Tower & Maidens - Not listed anymore? has more traditional RPG combat. Not a good game (adult themes)

There are a few upcoming games as well:

NO.996 Demon Corporation - I played the demo and it's pretty great. Rouge-lite / random elements but didn't feel bad/cheap like others do. Interesting push/puzzle mechanics that is more interesting than the typical Magic Tower.
Asa-Chan Wants to Go Home! - It looks like a Magic Tower but I'm not 100% without a video. (probably will have adult themes)
遗忘之境 The forgotten boundary - Looks good but Chinese only atm. Hope they translate it.

Originally posted by SakuraRonin:

I've found quite a few Magic Tower / WWA / Tower of the Sorcerer games (some of these you have already listed):

This is a great list.
I actually forgot I had bought Dark Tower, so I need to go back and play that. I also have deep rune :)
I also knew about Lulu Farea but didnt post it cause you know how "some" people are 😏
There's a sequel to Lulu Farea too called: Demonic Nation Florehades

Whats up with the DLC prices on the Tactical Nexus game 😥😨😱

Either way will definitely check out these

edit: nice I already have drod tendrys tale

Outside of steam I've come across a few other places with Magic Tower games

itch.io:
Dungeon of the Overlord[mrserji.itch.io] - more of a short demo/alpha but was fun for a bit. Probably won't even be finished though
阿萊爾迷宮 Alai Maze[shellcial.itch.io] - Chinese only
ウナきりのWWA的冒険[nomaly.itch.io] - Extremely short & simple. Japanese only
Reveries[sapphidoll.itch.io]
Nodes[sapphidoll.itch.io] - I remember this one being a bit buggy
魔塔 16[qix.itch.io] - Chinese only
A couple of the previosuly listed games are also available on itch.io (Deep Rune, Myth Bearer, Magirune 1 & 2)

dlsite (all adult themed): just search for "WWA" rpg games. some are good and others are bad. Generally these games are harder/better if you avoid the adult content. RJ312391, RJ239375, RJ395104, and RJ214761 (Lulu Farea 2) are more notable from what I've seen.
Lulu Farea 1 and Malice in Magic Tower are also listed on dlsite

Finally there are some Chinese sites with a plethora of content
https://h5mota.com - web (html5/javascript) based. I made several iterations of my own (bad) translator at one point it so I could play them. Some of them are extremely good but the language barrier is high
https://www.wdmota.com/ - Haven't really gotten any to work but also haven't tried to hard. You probably need a Chinese locale installed to run them. Some of them seems to be based off rpg maker.

Also thanks for your list. I never heard of Helen's Mysterious Castle or I Am Overburdened before!

Just to add onto this (even more), the workshop for DungeonUp has what I guess is player modded? version of: Tower of the Sorcerer 😀
https://steamhost.cn/steamcommunity_com/sharedfiles/filedetails/?id=508374632

Actuallly Tactical Nexus "recently" dropped their negative discount schemes (I think it was a month ago or something). Now it's just like 20 USD for the base game, and each DLC is similarly priced. Should be back into the most recommended spot IMO :)
I only have the base game and I already have more than 50 hours and not yet completed it yet. The way to view the DLCs is more like sequels, as I can expect they will require atleast as much time commitment to finish as the base game. But the base game is still totally worth it's 20 USD price right now, even without any plans to get any of the DLC, it's a full experience. (Also the demo is free which is already like 20 hours long)

Originally posted by SakuraRonin:

I've found quite a few Magic Tower / WWA / Tower of the Sorcerer games (some of these you have already listed):

Thanks for the list btw! I was looking for something like this.
I hope we get more non-RPGMaker magic tower games in the future

Originally posted by SakuraRonin:

Also thanks for your list. I never heard of Helen's Mysterious Castle or I Am Overburdened before!

Was going back through these great lists and realized I never actually said Thank you in text, I just sent the awards lol, so thanks for the extra info sakuraronin!
Lol im always bad about that.

a new magic tower-like has been released :O https://steamhost.cn/app/2607260/Demon_Corporation_Onboarding/

There is also this smaller magic tower like
https://steamhost.cn/app/3622730/The_Adventure_of_Amethyst_Knight/