Indo-European languages

This is a collection of languages which includes nearly all of the most spoken languages today. This includes Germanic languages (English, German, Dutch), Latin-derived or Romance languages (Spanish, French, Italian, Portuguese), Slavic or Russian-like languages (Russian, Belarussian, the languages of former Yugoslavia), some languages in the Middle East and India called Indo-Iranian languages (Hindi, Bengali, Farsi, Sinhala), among others such as Armenian and Albanian.

Conlangs
Many conlangs are based off of Indo-European languages, sometimes specific families, due to the fact that they are so prescient. A mistake people sometimes make is to assume that these are the only languages, because they're so ubiquitous and varied. Some easy-to-remember non-Indo-European languages are Chinese, Japanese, and Korean. Some languages near Indo-European languages which aren't are: Finnish and Estonian (Uralic); Hungarian (Uralic; related to the two before in the way that Russian is related to Spanish); Tamil, Telugu, Kannada, Malayalam (Dravidian); and Turkish (Turkic).