In the vast realm of typography, selecting the suitable typeface for user interface (UI) design can make a significant difference. Clean typography minimizes clutter, boosts legibility, and provides an intuitive user experience. Sans-serif fonts are the ideal choice for those seeking a contemporary and neat interface due to their simplicity and versatility. Here’s a compilation of some exceptional sans-serif typefaces that cater to the modern design ethos:

1. Figtree by Erik Kennedy: A relatively recent addition to the typography world, this font beautifully amalgamates elements of some of the finest typefaces available. With its neutral charm, Figtree is apt for diverse UI applications.
2. Satoshi from the Indian Type Foundry: Embodying modernity with its minimalistic appeal, Satoshi’s straight lines impart a sense of seriousness. Its rich OpenType features further enhance its utility.
3. DM Sans crafted by Jonny Pinhorn: Standing out with its nearly constant stroke thickness, DM Sans offers tidiness in design. Its height is particularly suited for smaller text, even though it isn’t a variable font.
4. Plus Jakarta Sans by Tokotype: This font boasts a high x-height, ensuring readability. The consistent stroke thickness provides a streamlined, minimalist feel.
5. Inter designed by Rasmus Andersson: Lauded by many designers, Inter offers flexibility with its array of OpenType features, making it adaptable for varied needs.
6. Manrope by Mikhail Sharanda: This font is an elegant blend of multiple styles. Its semi-geometric and slightly condensed nature offers a distinct look, perfect for modern interfaces.
7. Open Sans from Steve Matteson: Launched by Google, this familiar face in the font world is humanist in its design, exuding a clean, contemporary aura. Its tall x-height bolsters on-screen legibility.
8. Urbanist by Corey Hu: Rooted in geometry, Urbanist brings a crisp look to interfaces. Its sharpness is accentuated by its constant stroke thickness.
9. Lato from Łukasz Dziedzic: Lato stands out with its unique adaptability – appearing neutral at smaller sizes but revealing its flair when enlarged. It blends warmth and modernity seamlessly.
10. Quicksand designed by Andrew Paglinawan: Straying slightly from the neutral vibe, Quicksand’s rounded terminations add a friendly touch. However, its geometric foundation retains its minimalist appeal.

Incorporating the right typography can enhance the appeal and functionality of a UI. While these recommendations encompass a broad range of styles and nuances, they’re united in their ability to optimize the user experience. As always, the key lies in understanding the design context and employing typefaces that resonate with the intended message and aesthetic.