Is there an adobe font which is similar to ITC Founder's Caslon?

Adobe Caslon Pro Italic has many of those same glyphs, including ligatures (such as "Th") as well as decorative "dingbat" glyphs. Many of these extra characters can be accessed in the Glyphs panel in Adobe Illustrator, InDesign, etc. The glyphs probably won't line up exactly with the ITC Founders Caslon cut, but the vast majority of people won't be able to tell the difference. Adobe Fonts offers several other versions of Caslon, just not the ITC Founders version.

BTW, I wish the Adobe Fonts web site had a way to preview all the glyphs contained in a selected typeface. For now I usually resort to visiting other commercial fonts web sites to preview a glyphs table. Or in the case of free/open source fonts that are carried at Adobe Fonts some sites, such as Font Squirrel, will show a complete glyphs table.