"Educated Guess" values have been recorded from Corecraft test server which isn't a primary source (credit for that research goes to NiM and Shiro). However, when I've tried to verify some of their values now and in the past, they've come out pretty much right and in my opinion are preferable to any guessed values and can be used for the time being until primary sources are studied.
Mob
Damage
Health
Mana
Abilities
Immunities
Source
Comments
Tempest-Forge Patroller
6600-7600
48472
0
Knockdown for 330-360, Charged Arcane Missile for 1700
?
Educated Guess
N/A
Bloodwarder Slayer
3320-4300
28293
0
Solar Strike for 300% damage, Whirlwind for +714
?
Educated Guess
N/A
Bloodwarder Physician
1700-2400
18120
15400
Anesthetic, Bandage for 1200, Holy Shock for 1500-1900
Wowhead comments mentioned Unstable Affliction being cast which seems just silly for a melee mob without mana. However, being mistaken about that kind of ability seemed like a truly extreme mistake when other mobs don't have UA and datamined list of abilities at Wowdb includes UA as well. While searching for evidence I found this video where Chilling Touch is applied the exact moment Centurion's melee attack hits and investigating Wowhead's ability information shows "triggered by" and previously mentioned percentages. You'd have to test this on retail to truly figure this stuff out, but I'm very confident the abilities are triggered by autoattacks
Sunseeker Netherbinder
1800-2175
21587
7196
Starfire for 1800-2200, Arcane Nova for 1680-2040 and 420-520 heal, defensive Dispel, summons Arcane Servants
?
Educated Guess
N/A
Arcane Servant
725-930 (arcane)
5589
3155
Arcane Volley for 1015-1180, Arcane Explosion for 1470-1610
?
Educated Guess
N/A
Mechanar Wrecker
2400-3050
27652
0
Glob of Machine Fuel, Pound
Can't be enslaved
Educated Guess
N/A
Mechanar Tinkerer
615-870
14147
0
Netherbomb for 911-1008, Maniacal Charge and Nether Explosion for 1275-1725 (according to Wowhead at around 50% health)
?
Educated Guess
N/A
Sunseeker Engineer
2200-2950
22367
3155
Death Ray for 3053-3547, Growth Ray, Super Shrink Ray
?
Educated Guess
N/A
Gatewatcher Gyro-Kill
4200-5900
124538
0
Shadow Power, Stream of Machine Fluid, Saw Blade for 3515-3885 and DoT ticking 1045-1155
Immune
Educated Guess
A certain other secondary source claimed 3-5k damage for Saw Blade. In this video prior to 2.0.10 patch you can see damage (as well as you can see from low-bitrate 480p, anyway) and for me it seems like post-nerf values listed
Tempest-Forge Destroyer
9000-10000
116332
0
Knockdown for 1000-1080, Charged Fist for Charged Fist for 1900-2100
Can be stunned
?
N/A
Mechanar Driller
2600-3300
29083
0
Drill Armor, Glob of Machine Fluid
?
Educated Guess
N/A
Mechanar Crusher
2350-3250
29083
0
The Claw for 150% damage, Glob of Machine Fluid
?
Educated Guess
N/A
Gatewatcher Iron-Hand
4200-5900
164389
0
Stream of Machine Fluid, Shadow Power, Hammer Punch for +720, Jackhammer hitting 3135-3465
Immune
Educated Guess
N/A
Mechano-Lord Capacitus
4400-5800
258300
0
Head Crack, Nether Charges exploding in Nether Detonation for 2100-3100, Polarity Shift
Immune
Educated Guess
I've seen 2400+ damage on Nether Detonation on some retail videos which is outside the documented range of 2193-2306. Corecraft is correct in having higher damage output, but besides Wowhead comment that has rough estimate of "2000-3000" and Tentonhammer says "up to 3000 damage", I can't source that damage.
Sunseeker Astromage
1800-2300
30181
3155
Fire Shield for 1045-1155, Scorch for 1725-2275, Solarburn for 3330-3870 and DoT ticking 475-525
?
Educated Guess
N/A
Nethermancer Sepethrea
2900-4000
131489
33090
Frost Attack for 736-925, Arcane Blast for 875-1125, Dragon's Breath for 684-794, Solarburn for 1600-1950 and DoT ticking 240-260
Immune
Educated Guess
I can't find evidence for Sepethrea having Solarburn but then again, I had difficulty sourcing 3k Inferno damage but eventually could find a video showing such damage so who knows. It's not an impactful damage anyhow
"Educated Guess" values have been recorded from Corecraft test server which isn't a primary source (credit for that research goes to NiM and Shiro). However, when I've tried to verify some of their values now and in the past, they've come out pretty much right and in my opinion are preferable to any guessed values and can be used for the time being until primary sources are studied.