Japanese is another. Any vowel combination can occur and each takes two morae (beats): kao, ue, nai, ie, au, etc.; and each takes as long as a long vowel, so Oosaka and Tookyoo and Yokohama and Aomori are all four beats.
In Japanese you have to be careful not to make a semi-consonant glide between vowels: pairs like ia and iya can both occur and are quite distinct.
Swahili is like Japanese and the Polynesian languages in that groups like ai, au are disyllables, like any other vowel combination. Presumably then this is widespread in the Bantu family.
Some other languages don't have vowel combinations because they do always use glides. Philippine languages typically only have groups such as uwa, iya, a'a (with glottal stop).
Australian languages are (typically) similar but tend not to have glottal stops: so the two-vowel combination aa is a long vowel but otherwise they have glide-separated groups like awu, uwu, iyi, ayi.
