Three basic types include:
All metal side drawers with a melamine bottom
Cost effective, and have a decent functionality, but result in loss of interior space and full extension is limited
Plywood or melamine box drawers
Allow for the option of using under mount tracks and deeper drawers. Nailed together or glued and doweled. Offers good life, but water leaves melamine vulnerable
Dovetail drawers and solid wood drawers
A more expensive option with under mount tracks. However this is a lifetime drawer that will not need replacement. The best tracks are German made and have a lifetime warranty.