I'm looking for some artist like "eto", who makes makes many pictures of one type, like one with panties, one without, one with vibrator, etc (search for him and you know what i mean). Can someone give me other artist names like eto?

Use a site like e-hentai or exhentai and set the filter to "artist Cg" or "game_cg" or both.

You will find a lot of CG sets with image variations like that. (along with lots of commenters who complain about it but that's another matter)

You can then either play around with their archive or enter some of those artists into Gelbooru's search.

Be warned though, e-h tends to use different tags for many artists for various reasons.(Example: Gelbooru uses "Slashcat" and e-h uses "nukomashi_dou"