Below is a list of matching minecraft versions to the worlds in this torrent
If you got any of the missing worlds or versions matching the worlds message me on https://www.reddit.com/user/CrackCrackPop/ 

28.06.18 update:

Got a nice collection from MegaXLR with a quote:
[07:32] Etho: The upload is finished. I sent you a 1.1 GB *.zip with most my early backups. Starter world was my first world, Learned is my second, and then various backups from throughout my LP series. Episode 105 is when my current LP world starts... so I sent you 4 different worlds in total.

25.06.18 update:

source - https://www.reddit.com/r/mindcrack/comments/1vl5q0/ethos_world_downloads/

Hey guys, I've recently been trying to get ahold of as many lp world downloads (of Etho) as possible here's the list of downloads.

Episode	Download name	Have?	Filesize	Minecraft version	Original download link
Minecraft - Tutorial: Repeater Cannon	Cannon Run Map	Yes	8,058KB	Beta 1.9 Pre3	http://www.mediafire.com/?zkz1eeaffo3npir
Minecraft - Special: Old World Tours	Starter World	Yes	? (original unavailable)	Alpha 1.2.2	http://www.mediafire.com/?am2jmedd2yke2aq
Minecraft - Special: Old World Tours	Learned World	Yes	? (original unavailable)	Alpha 1.2.2?	http://www.mediafire.com/?6qltsf6gckmp90a
26	LP World Download	No	?	Beta 1.2_02	http://www.megaupload.com/?d=YTPQWHL3
34	World Download	No	?	Beta 1.3_01	http://www.fileserve.com/file/bvbfpNm
36	World Download (36)	No	?	Beta 1.3_01	http://www.mediafire.com/?5ytgkpx9mrl5k7y
41	World Download (41)	No	?	Beta 1.3_01	http://www.mediafire.com/?q6tc6b2l3sjbsq9
46	World Download (46)	No	?	Beta 1.3_01	http://www.mediafire.com/?xy88z2nayhx2wo4
50	World Download (50)	No	?	Beta 1.4	http://www.mediafire.com/?kr36j6j3bxtzsn2
55	World Download (nc)	No	?	Beta 1.4_01	http://www.mediafire.com/?yqdymamwdzycyv9
56	World Download (56)	No	?	Beta 1.5_01	http://www.mediafire.com/?zf4pf3dq1af1k9m
59	World Download (59)	No	?	Beta 1.5_01	http://www.mediafire.com/?rn6huhhv16x5vse
64	World Download (64)	No	?	Beta 1.5_01	http://www.mediafire.com/?ibootf0g9pbj72t
69	World Download (69)	No	?	Beta 1.6.6?	http://www.mediafire.com/?plq5crv5htxi6wu
83	World Download (83)	Yes	40,514KB	Beta 1.7.3?	http://www.mediafire.com/?yx1k9t9nbmdm3cm
93	World Download (93)	No	?	Beta 1.7.3	http://www.mediafire.com/?up1tnwzfi121pzu
100	World Download (100)	Yes	? (original unavailable)	Beta 1.7.3	http://www.mediafire.com/?6yvha6uiyeb7hqg
120	World Download (120)	Yes	13,380KB	1.0.0	http://www.mediafire.com/?kr51qxp51bj5ea2
128	World Download (128)	No	?	1.0.0	http://www.mediafire.com/?m651c7nzucp6fjc
138	World Download (138)	No	?	1.1	http://www.mediafire.com/?6kocpngzb8nt7ng
150	World Download (150)	Yes	51,692KB	1.1	http://www.mediafire.com/download.php?yj89858ogqm4hd9
167	World Download (167)	Yes	61,221KB	1.2.5	http://www.mediafire.com/?gi9ou6c6d30x9on
184	World Download (184)	Yes	62,664KB	1.2.5	http://www.mediafire.com/?a13jjwm3wip3ckr
195	World Download (195)	Yes?	63,841KB	1.2.5	http://www.mediafire.com/?x6knk743k8kec48
215	World Download (214)	Yes	87,953KB	12w36a	http://www.mediafire.com/?1eq8izzids8vvwa
242	World Download (242)	Yes	91,629KB	1.4.6	http://www.mediafire.com/?p65e7eu42hdx1xh
264	World Download (264)	Yes	98,777KB	1.5.1?	http://www.minecraftworldmap.com/worlds/M5zNm
302	World Download (302)	Yes	164,440	1.7.2	http://www.minecraftworldmap.com/worlds/A6ffg
Does anybody still have these and could please upload them somewhere? Did I maybe miss a few worlds? Of course I'll happily provide the ones I have for you guys as well (if you ask me to), most of these are quite easy to find, though. Sadly most the links he provided have had copyright claims on them and were removed.

Edit: Looks like I overlooked the World for episode 69, so I'm missing 4, and I forgot to mention that the pre-lp worlds might not be "the original deal".

Edit 2: Definitely didn't do my homework there, I'm currently going through his episodes looking for all the downloads, so if you're tempted to tell me how much is missing, please wait a little, I will update this in a little while.

Edit 3: Alright, I think I have the full list now. Updated it up there

Edit 4: Added 214, thanks again /u/vanquish349
 & added a flag to episode 100 (looks like it might have been tampered with)

Edit 5: Added 120, thank goes to /u/martin2250

Edit 6: Added Cannon Run Map and will be receiving #150 & #167 all kindly provided by /u/Kobbett
 thanks a lot mate!

Edit 7: Added #150, #167 & #184 (thanks to /u/DJParson89
 ), I also found a file online which -judging from the filesize- could potentially be #195 (hence the Yes?), I'm going to go explore it a little and see if it fits.