ggplot2 essentials for great data visualization in r infographic

Data visualization infographic titled "Streamgraph Topic Over Time" using a TREND LINE (over time) as the dominant visual element, because the subject is change over time and should clearly reveal inequality across periods. Show a large streamgraph-style stacked area timeline spanning "2018" to "2024" with sharp x-axis labels, y-axis labels, and clear tick marks in English, no truncated axis, honest scaling, and readable legend. Emphasize one dominant category taking most of the area across time, with smaller categories compressed to show imbalance. Use realistic plausible illustrative values labeled clearly as illustrative: main topic share rising from 48 to 67, second topic fluctuating from 22 to 16, third topic from 15 to 9, fourth topic from 10 to 5, fifth topic from 5 to 3. Include a small secondary donut inset labeled "Composition in 2024 (Illustrative)" showing the final-year split to reinforce composition without replacing the time-based main chart. Add 4 key insight callouts with headline number, short interpretation, and small icon: "67%" — "Dominant topic controls over two-thirds of attention by 2024" with crown icon; "19 pts" — "Lead topic gained 19 percentage points since 2018" with upward arrow icon; "3 topics < 10%" — "Most topics remain marginal despite overall growth" with tiny circles icon; "2.8x" — "Largest topic is nearly three times the second-largest in 2024" with scale imbalance icon. Add handwritten annotation arrows and circled notes to stress inequality, concentration, and widening gap over time. Include labels in exact English text: "Share of total discussion (%)", "Year", "Dominant Topic", "Secondary Topic", "Niche Topic A", "Niche Topic B", "Niche Topic C", "Composition in 2024 (Illustrative)", "Inequality widens over time", "Small topics stay compressed". Add a bottom source/data-note strip reading: "Data note: Illustrative example for visual demonstration only. Figures are plausible, not sourced." Visual style: hand-annotated sketchnote, high-contrast red and green palette on off-white paper texture, marker strokes, pencil underlines, editorial data journalism illustration, FT / Bloomberg-grade chart aesthetics, vector-clean infographic layout, energetic but analytical mood. Do not include the target search phrase as on-image text; only reflect its visual intent indirectly through polished chart design. All text MUST be written in English (array). Every heading, label, caption, legend and metric name in the image must be in English — not English. Spell each English word correctly using English characters and diacritics. Numbers stay as digits, no fake authoritative sources cited, no watermarks Numbers labeled "illustrative" unless the user supplied specific sourced data. No fake authoritative sources cited (do not invent "Source: Reuters 2025" — use "Illustrative example" instead). No misleading axis truncation or scale manipulation.