\begin{table*}[t]
\centering
\scriptsize
\setlength{\tabcolsep}{2pt}
\renewcommand{\arraystretch}{1.0}
\begin{tabular}{ccp{10cm}cc}
\toprule
& \textbf{Rank} & \textbf{Contrast} & \textbf{RF Importance (\%)} & \textbf{Rank range} \\
\midrule
\multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{HMP}\\\tiny body sites}}}
& 1 & Streptococcaceae vs Lactobacillus + Leuconostocaceae                                      & 3.94 & 1   \\
& 2 & Lactococcus vs Streptococcus                                                              & 3.42 & 2--3 \\
& 3 & Pseudomonadales vs Cardiobacteriaceae + Vibrionaceae + Legionellales + ...                & 3.40 & 2--3 \\
& 4 & Bacillales vs Gemella + Exiguobacterium + Turicibacter + ...                              & 2.95 & 4--5 \\
\midrule
\multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{cMD3}\\\tiny westernized}}}
& 1 & Prevotella vs Alistipes + Anaerotruncus + Bacteroides + ...                               & 1.77 & 1   \\
& 2 & Murimonas vs Alistipes + Anaerotruncus + Bacteroides + ...                                & 1.49 & 2--4 \\
& 3 & Prevotella vs Bacteroides + Alistipes                                                     & 1.45 & 2--5 \\
& 4 & Lactobacillus vs Alistipes + Anaerotruncus + Bacteroides + ...                            & 1.38 & 4--6 \\
\midrule
\multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{cMD3}\\\tiny health/dis.}}}
& 1 & Lachnoclostridium vs Bacteroides + Turicibacter + Ruminococcus + ...                      & 0.55 & 1   \\
& 2 & Bifidobacterium vs Blautia + Enterococcus                                                 & 0.38 & 2--5 \\
& 3 & Flavonifractor vs Bifidobacterium + Actinomyces                                           & 0.35 & 2--6 \\
& 4 & Fusicatenibacter vs Gemmiger                                                              & 0.34 & 2--6 \\
\midrule
\multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{DISCO}\\\tiny leukemia}}}
& 1 & Myeloid cell vs Erythrocyte/Megakaryocyte + Hematopoietic precursor cell                  & 14.50 & 1   \\
& 2 & Cycling T/NK cell vs ILC + T cell + NK cell                                               & 11.79 & 2   \\
& 3 & Lymphoid cell vs Erythrocyte/Megakaryocyte + Hematopoietic precursor + Myeloid cell       & 6.30  & 3--4 \\
& 4 & MAIT cell vs Naive T cell + Memory T cell + CD8 T cell + ...                              & 5.45  & 3--5 \\
\midrule
\multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{DISCO}\\\tiny HCC}}}
& 1 & Erythrocyte/Megakaryocyte vs Myeloid cell + Lymphoid cell + Hematopoietic precursor cell  & 10.08 & 1   \\
& 2 & B cell precursor vs Plasma cell + INF-activated naive B cell + Memory B cell + ...        & 6.52  & 2--4 \\
& 3 & Hematopoietic precursor cell vs Myeloid cell + Lymphoid cell                              & 6.34  & 2--3 \\
& 4 & Venous EC vs LSEC                                                                         & 5.45  & 2--8 \\
\bottomrule
\end{tabular}
\vspace{8pt}
\caption{Top-4 PolyILR contrasts by RF importance (\%){\color{black}, with rank range across 5-fold CV}. Each contrast is a coordinate representing the log-ratio of geometric means between two groups. {\color{black}``A vs B + C'' means the log-ratio of geometric means of A's descendants against the pooled descendants of B and C; ``+ \ldots'' marks additional siblings omitted.} {\color{black}Full importance variability (mean $\pm$ std) is in Appendix~\ref{appdx:exp-results}.}}
\vspace{-10pt}
\label{tab:contrasts}
\end{table*}

% \begin{table}[t]
% \centering
% \scriptsize
% \setlength{\tabcolsep}{2.5pt}
% \renewcommand{\arraystretch}{1.0}
% \begin{tabular}{clp{5.9cm}r}
% \toprule
% & \textbf{Rk} & \textbf{Contrast} & \textbf{Imp.} \\
% \midrule
% \multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{HMP}\\\tiny body sites}}} 
% & 1 & Lactococcus vs Streptococcus & 3.57 \\
% & 2 & Streptococcaceae vs Lactobacillus + ... & 3.56 \\
% & 3 & Pseudomonadales vs Cardiobacteriaceae + ... & 3.49 \\
% & 4 & Pasteurella vs Haemophilus + ... & 2.83 \\
% \midrule
% \multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{cMD3}\\\tiny westernized}}} 
% & 1 & Prevotella vs Alistipes + ... & 2.01 \\
% & 2 & Prevotella vs Bacteroides + Alistipes & 1.66 \\
% & 3 & Murimonas vs Alistipes + ... & 1.64 \\
% & 4 & Lactobacillus vs Alistipes + ... & 1.41 \\
% \midrule
% \multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{cMD3}\\\tiny health/dis.}}} 
% & 1 & Lachnoclostridium vs Bacteroides + ... & 0.59 \\
% & 2 & Bifidobacterium vs Blautia + Enterococcus & 0.39 \\
% & 3 & Enterococcus vs Blautia & 0.37 \\
% & 4 & Lachnoclostridium vs Parabacteroides + ... & 0.34 \\
% \midrule
% \multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{DISCO}\\\tiny leukemia}}} 
% & 1 & Myeloid cell vs Erythrocyte/Megakaryocyte + ... & 14.4 \\
% & 2 & Cycling T/NK cell vs ILC + ... & 11.1 \\
% & 3 & Lymphoid vs Erythrocyte/Megakaryocyte + ... & 7.1 \\
% & 4 & MAIT cell vs Naive T + ... & 5.3 \\
% \midrule
% \multirow{4}{*}{\rotatebox{90}{\parbox{0.9cm}{\centering\texttt{DISCO}\\\tiny HCC}}} 
% & 1 & Erythrocyte/Megakaryocyte vs Myeloid + ... & 10.2 \\
% & 2 & Hematopoietic precursor vs Myeloid + Lymphoid & 8.4 \\
% & 3 & Venous EC vs LSEC & 5.3 \\
% & 4 & Alveolar macrophage vs Kupffer cell & 5.0 \\
% \bottomrule
% \end{tabular}
% \vspace{3pt}
% \caption{Top-4 PolyILR contrasts by RF importance (\%). Each contrast is a coordinate representing the log-ratio of geometric means between two groups. {\color{red}``A vs B + C'' means the log-ratio of geometric means of A's descendants against the pooled descendants of B and C; ``+ \ldots'' marks additional siblings omitted.}}
% \vspace{-15pt}
% \label{tab:contrasts}
% \end{table}