Talking about Sedum (Sedum clavatum), Baja_Costero wrote:

Small, creeping Mexican Sedum with glaucous green leaves (sometimes with red tips), growing to about 6-8 inches tall. Flowers are white and spreading. This species is known from the cliffs at one locality in the state of Mexico. It is easily reproduced and relatively common in cultivation.

Leaves are easily detached from stems and can be used for propagation. Stems tend to grow sideways over time and branch quite a bit. Plants shipped through the mail will tend to fragment and drop a lot of leaves, especially if carelessly handled.

Talking about Sedum (Sedum sinforosanum), Baja_Costero wrote:

Small, offsetting, glaucous rosette succulent. with rosettes to about 3.5 inches and stems to about 2-3 inches long. Leaves are bluish pink to whitish and flowers are fragrant and bright white, with recurved petals.

From Barranca de Sinforosa, Chihuahua. Described in 2017, related to S. suaveolens (Durango). Some differences: branchler, often longer-stemmed, with a smaller, pinker rosette; taller inflorescences with much smaller flowers.

Talking about Golden Sedum (Sedum adolphi), Baja_Costero wrote:

Very common soft-leafed succulent from Veracruz, Mexico. Leaves are alternate and yellowish green to orange, with a slight keel. Stems are sprawling. Flowers are white, with a slight fragrance. Various cultivars with unusual colors or variegation have been named.

This plant is well behaved and widespread in cultivation, though a bit of a messy grower due its sprawling habit. With the color forms, the most dramatic hues will be observed in strong light.

The species nussbaumerianum has at various times (including the present) been considered a synonym of Sedum adolphi, which was described about 12 years earlier. They are currently considered to be the same plant.

More info here:

The thread "Invalid name nussbaumerianum" in Plant Database forum

Talking about Jelly Bean (Sedum x rubrotinctum), Baja_Costero wrote:

Fat leafed, sprawling succulent with really striking red color in strong light. The common name is apt. Bright yellow, wide open flowers appear in terminal clusters. Common and well behaved in cultivation. Provide strong light for best color and form.

Formerly described as a species, this plant is known only from cultivation and is apparently a garden hybrid of Sedum stahlii and some other Sedum, maybe pachyphyllum.

It appears in the database despite a general prohibition on garden hybrids in the form of Genus x species, presumably because at one point (over 4 decades ago) it was considered an actual species. More info here:

https://www.crassulaceae.ch/de...

Talking about Lesser Mexican Stonecrop (Sedum confusum), Aeonium2003 wrote:

Yellow flowers appear in the spring to summer. Leaves are green, but will turn orange in full sun.

This Sedum is often confused with Sedum kimnachii. According to Sedumzz, "Kimnachi tends to stay smaller than confusum and leaves tend to stay more compacted than confusum."