As I discovered different bodyshapes i've come to find that the building blocks for these are found at these older websites. Many of which are dead.
Especially for the muscular bodyshapes Marvine's content is the stuff of legend. But I can't get any of the meshes for these (Slim Body Builder, Huge Body Builder & Lean Body Builder) as insimenator.org/ & insimadult.org/ are down. Have they been down for a couple of days or is it just me? And from my knowledge it has gone down temporarily in the past due to server issues as well. I would really appreciate if anyone can send me the base meshes for these bodyshapes or point me to an archive or backup. I've searched and searched but found nothing.
I thankfully got the Athletic guy meshes from Insimenator right before it went down. Some Body builder meshes are available on MTS aswell as the adult site.
I've gotten into modding, and Sims 2 in-general pretty recently. I used to play the Sims 3 previously.
Any help is appreciated.

I just managed to download them from the Wayback Machine- try these links:
https://web.archive.org/web/2019052...001&board=499.0
https://web.archive.org/web/2019061...php?board=159.0

Lean Body Builder you might be better getting from SynapticSims:
https://synapticsimslair.jcink.net/...hp?showforum=21

Yeah, it's down for me too.

I have a couple of SBB meshes and clothing on my SFS (see link in my signature).
InSim and its adult site have been down for about a week now. They've been a bit more unstable as of late.

Some other places you might try:
JulieJ has a number of items for male bodyshapes on her Tumblr - https://julietoon-ts2.tumblr.com/. She also has Wordpress sites.
Blue Heaven Sims - https://blueheavensims.wordpress.com/ - has a number of meshes for male and female bodyshapes. Ocelotkatl has revised many of them
G-Knee/jbeach34 did a lot of LBB things. I believe she was active on SymnapticSims as mentioned in an above post. Perhaps even on their Tumblr - https://www.tumblr.com/synapticsim/tagged/bodybuilder

If you specific meshes in mind, let me know. I have quite a number of LBB, SBB, BB & HBB clothing items in my game so I may have particular meshes if you know what they are.

Huge BB (full outfit, skintones, and showerproof mesh)
https://www.mediafire.com/file/sfvy...uge_BB.rar/file

Slim BB (full outfit, skintones, and showerproof mesh)
https://www.mediafire.com/file/g4d7...lim_BB.rar/file

Lean BB (full outfit, skintones, and showerproof mesh)
https://www.mediafire.com/file/b3do...LeanBB.rar/file

And many other unusual figures here:
https://www.thesims.com.ua/forum/viewtopic.php?t=11345

Omg thank you all so much!!! I didn't think I would get even a single reply. Ya'll are literal life savers.
Thank you for sharing these treasure troves with me. :P

Thanks alot! If I come across something that needs a specific mesh I'll pm you. So many new toys to play with

I'm quite the bodyshape junky. It just so happens that LBB, SBB, BB and HBB are the four most used male shapes that I have in my game. I rarely use the default Maxis shapes for any of my Sims.

I have more than 1700 files total (meshes and recolors) for those 4 male shapes. A lot of the clothing I converted for personal use from other clothing without permission from the original creators to share them publicly. Also, some of those files are adult meshes (i.e. not "barbie" as they came from different adult sister sites so that I can't link to them or share them here).

How about you check out the links provided in the above replies and if there are particular meshes you find that you still need, then I can comb through each particular shape's subfolder in my Downloads folder and see if I have what you want.

For the record:
• I'm not affiliated in any way with Insim/ISA, and I don't archive their content.
• I don't have "backup copies" of Marvine's original meshes because I don't use them in my game.
• SBB (at least SBBv2, what most folks refer to colloquially refer to as SBB) and LBB aren't Marvine's creations. SBBv2 was created by SynapticSim, and LBB was created by SynapticSim/Kielan, and neither is available on Insimentator. They're hosted at https://synapticsimslair.jcink.net/
• I don't typically respond to asks at MTS, y'know, because I have my own blogs and Discord server and haven't been active here in 14-ish years (Thank you Charity for bringing the post to my attention).

I'm happy to answer questions about my own content, but won't be fielding any more asks about Insimenator/ISA in my inbox. Por su atención, gracias.

SBB imeshes are on Insim; I already linked them in my post above (wayback machine has them archived). LBB are also there:
https://web.archive.org/web/2019052...001&board=604.0
And I did link to Synapticsims already too.