以下の投稿の後、matplotlib.tableのデザインをいじってみたので紹介する。
（０）`edges='open'`での出力（装飾なし）

（１）縦横罫線の表

（２）横罫線のみの表

（３）罫線を用いず行を色分けした表

プログラム

import openpyxl as excel
import matplotlib.pyplot as plt
import numpy as np


def inp_excel(fnameR):
    book=excel.load_workbook(fnameR,data_only=True)
    worksheet=book['data']
    srmax,scmax=50,10 # search range
    k=0
    sr=[]
    for i in range(0,srmax):
        nrow=i+1
        ss=worksheet.cell(row=nrow,column=1).value
        if ss==None: k=k+1
        if k<3: sr.append(ss)
        if k==3: break
    n=len(sr)
    k=0
    sc=[]
    for j in range(0,scmax):
        ncol=j+1
        ss=worksheet.cell(row=2,column=ncol).value
        if ss==None: k=k+1
        if k<1: sc.append(ss)
        if k==1: break
    m=len(sc)
    rstr=f'A1:{chr(64+m)}{n}'
    rect=worksheet[f'{rstr}']
    data=[]
    for row in rect:
        row_data=[]
        for cell in row:
            s=cell.value
            if s==None: s1=''
            else:
                try:
                    s=float(s)
                    s1=np.round(s,decimals=3)
                except ValueError:
                    s1=s
            row_data.append(s1)
        data.append(row_data)    
    data=np.array(data,dtype=object)
    return data


def make_sdata(data):
    # change to str data
    n,m=data.shape
    sdata=np.empty((n,m),dtype=object)
    for i in range(n):
        for j in range(m):
            s=data[i,j]
            if s=='': s1=''
            else:
                try:
                    s=float(s)
                    s1=f'{s:.3f}'
                except ValueError:
                    s1=s
            sdata[i,j]=s1
    return sdata


def cells_1(sdata,tbl,trow):
    n,m=sdata.shape
    for i in range(n):
        for j in range(m):
            if sdata[i,j]!='':
                # alignment of title of each sub-table
                if i==trow[0] or i==trow[1] or i==trow[2]:
                    tbl[i,j].set_text_props(ha='left',weight='bold')
                # color of each cell
                if i!=trow[0] and i!=trow[1] and i!=trow[2]:
                    tbl[i,j].visible_edges='closed'
                    tbl[i,j].set_linewidth(0.5)
                # header color of each sub-table
                if i==trow[0]+1 or i==trow[1]+1 or i==trow[2]+2:
                    tbl[i,j].visible_edges='closed'
                    tbl[i,j].set_linewidth(0.5)
                    tbl[i,j].set_facecolor('#dddddd')


def cells_2(sdata,tbl,trow):
    n,m=sdata.shape
    for i in range(n):
        for j in range(m):
            if sdata[i,j]!='':            
                # alignment of title of each sub-table
                if i==trow[0] or i==trow[1] or i==trow[2]:
                    tbl[i,j].set_text_props(ha='left',weight='bold')
                # line of each row
                if i!=trow[0] and i!=trow[1] and i!=trow[2]:
                    tbl[i,j].visible_edges='TB'
                    tbl[i,j].set_linewidth(0.5)
                    tbl[i,j].set_edgecolor('#000066')
                # header color of each sub-table
                if i==trow[0]+1 or i==trow[1]+1 or i==trow[2]+2:
                    tbl[i,j].visible_edges='closed'
                    tbl[i,j].set_linewidth(0)
                    tbl[i,j].set_text_props(color='#ffffff')
                    tbl[i,j].set_facecolor('#000066')


def cells_3(sdata,tbl,trow):
    n,m=sdata.shape
    for i in range(n):
        for j in range(m):
            if sdata[i,j]!='':            
                # alignment of title of each sub-table
                if i==trow[0] or i==trow[1] or i==trow[2]:
                    tbl[i,j].set_text_props(ha='left',weight='bold')
                # color of each cell
                if i!=trow[0] and i!=trow[1] and i!=trow[2]:
                    if i%2==0: col='#fffacd'
                    else: col='#f5deb3'
                    tbl[i,j].visible_edges='closed'
                    tbl[i,j].set_linewidth(0)
                    tbl[i,j].set_facecolor(col)
                # header color of each sub-table
                if i==trow[0]+1 or i==trow[1]+1 or i==trow[2]+2:
                    tbl[i,j].visible_edges='closed'
                    tbl[i,j].set_linewidth(0)
                    tbl[i,j].set_text_props(color='#ffffff')
                    tbl[i,j].set_facecolor('#864a2b')


def fig(nnn,fnameR,fnameF):
    data=inp_excel(fnameR)
    sdata=make_sdata(data)
    n,m=sdata.shape
    trow=[]
    for i in range(n):
        if sdata[i,0]=='Data for basic design': trow.append(i)
        if sdata[i,0]=='Data for surging analysis': trow.append(i)
        if sdata[i,0]=='Shaft data': trow.append(i)
    i,j=trow[2]+1,2; sdata[i,j]=f'{data[i,j]:.0f}'

    tstr='Surging analysis data'
    astr=' (matplotlib.table)'
    tstr=tstr+astr
    tw,th=1,1
    col=np.array([2.0, 0.8, 0.8]+[1]*(m-3))
    colw=col/np.sum(col)*tw

    fsz=7.5
    xmin,xmax=0,1
    ymin,ymax=0,1    
    iw,ih=10, 12 # default (inch)
    plt.figure(figsize=(iw,ih),facecolor='w')
    plt.xlim([xmin,xmax])
    plt.ylim([ymin,ymax])
    plt.axis('off')

    tbl=plt.table(
        cellText=sdata,
        colWidths=colw,
        cellLoc='center',
        edges='open',
        bbox=[xmin,ymin,tw,th]
    )
    # fontsize change
    tbl.auto_set_font_size(False)
    tbl.set_fontsize(fsz)

    # decoration of cells
    if nnn==1: cells_1(sdata,tbl,trow)
    if nnn==2: cells_2(sdata,tbl,trow)
    if nnn==3: cells_3(sdata,tbl,trow)

    
    plt.title(tstr,x=np.sum(colw[0:m])/2,fontsize=fsz+2,weight='bold')
    plt.savefig(fnameF, dpi=200, bbox_inches="tight", pad_inches=0.1)
    #plt.show()


def main():
    #fnameR='surge_data_TR.xlsx'
    #fnameR='surge_data_HR_1.xlsx'
    fnameR='surge_data_HR_2.xlsx'
    for nnn in [0,1,2,3]:
        fnameF=f'fig_test{nnn}.jpg'
        fig(nnn,fnameR,fnameF)


#---------------
# Execute
#---------------
if __name__ == '__main__': main()
感想

エクセルの表をいじらなくてもpython側の表作成過程で色々デザインをいじれて楽しい。
以　上