I have read good things about Violet's Multicolored butterbean. They are a pole variety that is available at the included link. I placed an order just 2 days ago for some.

Butterbean link.

A good bush variety that we have grown for years is Jackson Wonder.

There are several varieties of pole baby limas still widely available. The old standard was Carolina/Sieva which if you are thinking white baby lima that is probaly the one You remember. Mezcla is the most widely available pole lima available at the present. Better yields than the Sieva. Willowleaf has a long season but is available. In the colored types, Florida butterbean, and several black baby limas. https://www.heavenlyseed.net/products.asp?cat=11&pg=6 http://www.sandhillpreservation.com/catalog/bean.html