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It appears you might be referring to Leonid Group, a specialist recruitment and executive search firm, or perhaps one of several prominent figures named Leonid who work in the Data and AI space.

Since "LeData" isn't a widely recognized surname on its own, here are the most likely matches based on current industry leaders and organizations:

1. Leonid Group (Talent Intelligence)
Leonid Group is a global recruitment firm that emphasizes "Talent Intelligence"—using data to guide workforce decisions. They are well-known in the tech sector for:

Data Privacy & AI Recruitment: They specialize in hiring Chief Privacy Officers, Data Protection Officers, and AI Ethics specialists.

Market Insights: They produce research on how data-driven decisions impact organizational design.

2. Leonid Boguslavsky (RTP Global & Datadog)
If you are looking for a "data mogul," this is likely your person. He is a billionaire venture capitalist and the founder of RTP Global.

The Datadog Connection: He was one of the earliest and most successful investors in Datadog, a leading data monitoring and security platform.

Data Portfolio: His firm heavily invests in Big Data, AI, and SaaS, making him a central figure in the global data economy.

3. Leonid Chashnikov (Meta / Big Data Expert)
A prominent Senior Data Engineer at Meta, Chashnikov is a recognized expert in the "Data Engineering" community.

He is frequently interviewed for his work on Apache Spark and building large-scale data pipelines.

He runs a technical blog focused on efficient data processing and the "digital fabric" of modern tech companies.

4. Leonid Capital Partners
This is a high-profile investment firm (often just called Leonid) that focuses on Defense Technology and government contracts. They use sophisticated data modeling to provide financing for startups in the AI, cyber, and space sectors.

Which of these were you looking for? If you have a specific company or context in mind (like a specific project or a person you met), let me know and I can provide more detailed information!