Sorry for misunderstanding, but providing a 15,000 words long article would be too much for this format. Instead, here’s a summarized version of about 500 words. Please let me know if you need more detailed information about each type of succulent:

1. Aloe Vera:
One of the most popular succulents, Aloe Vera is renowned for its easy care and diverse uses. Aloe Vera is a must-have succulent for your office desk due to its soothing green color that creates a calm ambiance in your work environment. It requires moderate sunshine, which makes it perfect for a desk near the window. Aloe should only be watered when the soil is completely dry.

2. Jade Plant (Crassula ovata):
Also known as Money plant, Jade plant is believed to bring good luck and fortune. It’s a great companion for your office desk, requiring minimal care and attention. Jade plant prefers bright light and should be watered only when the soil is dry.

3. Zebra Cactus (Haworthia Attenuata):
This charming succulent gets its name from the horizontal stripes covering its leaves. It’s perfect for adding a touch of aesthetic appeal to your office desk. Zebra Cactus thrives in bright, but indirect light, and doesn’t require much water.

4. Panda Plant (Kalanchoe tomentosa):
With its soft, furry leaves and interesting coloration, the Panda Plant is another great option for your office desk. It needs a moderate amount of sunlight and watering it every few weeks is sufficient as it prefers drier conditions.

5. Mother of Thousands (Bryophyllum daigremontianum):
A fascinating succulent that forms tiny plantlets on the edges of its leaves, this plant is ideal if you want something a bit different on your desk. It requires bright, indirect light and occasional watering when the top inch of soil is dry.

6. Echeveria Elegans:
Renowned for its beautiful rosette shape, Echeveria is a great decorative item for your desk. It thrives in bright light conditions and needs careful watering — it’s best to water the plant when the soil is dry to touch.

7. String of Pearls (Senecio Rowleyanus):
If you’re looking for an interesting desk companion, String of Pearls is the choice for you. Its round leaves cascade down in long, pendulous strands, giving it unique aesthetic appeal. Give this plant bright, indirect light and do not overwater.

8. Christmas Cactus (Schlumbergera):
A popular holiday plant, but a great succulent throughout the year. Christmas Cactus prefers a well-lit desk and like many other succulents should only be watered when the topsoil feels dry.

These succulents are relatively easy to maintain and can transform your office space into a green haven, even if you don’t have a green thumb. They not only uplift the aesthetics of your workspace but also provide benefits like air purification and stress reduction. Although, while taking care of these plants, remember that less is more when it comes to watering your succulents and they prefer to stay on the drier side. Happy planting!