Status of battery sensors in Markdown

Hello.
I am studying Home Assistant and Jinja. I’m trying to create different sensors and other things.
I made a sensor that collects battery sensors readings and then sorts entities and their status in ascending order into a list.
After that, in the form of a table in the Markdown, they are output to the HA interface.

Can someone comment on whether I did everything logically?

P.S. I know about custom cards like auto entities… But I want to learn to do something myself.

Sensor:

- trigger:
    - platform: homeassistant
      event: start
    - platform: time_pattern
      # hours: "/3"
      #seconds: "/15"
      minutes: "/20"
  sensor:
    - name: State of battery
      unit_of_measurement: entities
      state: "{{ 'non' }}"
      attributes:
        list_of_bat: >
            {% set nmsp = namespace(dict_nm_st = {}) %}
            {% for entity in states.sensor if is_state_attr(entity.entity_id, 'device_class', 'battery') 
            and (entity.entity_id.endswith("_battery"))
            and states(entity.entity_id) not in ['unavailable','unknown','none']  %}
            {% set nmsp.dict_nm_st = dict(nmsp.dict_nm_st, **{entity.name: entity.state |int(0) }) %}
            {% endfor %}
            {% set lst_dct_srt = nmsp.dict_nm_st |dictsort(false, 'value') %}
            {{ lst_dct_srt }}

In Lovelace (necessarily with empty lines):

      - type: markdown
        content: >-
          <center>  <h3>State of battery device, % </center> <center>
        
        
          |         |         |
        
          |:------- | -------:|
        
          {% for ent_nm, st_ent in state_attr('sensor.state_of_battery', 'list_of_bat')
          -%} | {{ ent_nm  }} | {{  "&emsp;&emsp;" ~ st_ent }}
        
          {% endfor %} </center>

Or, if, you need, with battery icons:

      - type: markdown
        content: >-
          <font color=DarkSlateGray size=2><center>  <h3>State of battery device, %
          </center> <center>
        
        
          |     |     |     |
        
          |:----|:----|----:|
        
          {% for ent_nm, st_ent in state_attr('sensor.state_of_battery','list_of_bat')-%}
          {% if st_ent < 15 %}
          {% set icon = '<ha-icon icon="mdi:battery-10"></ha-icon>' %}
          {% elif st_ent < 25 %}
          {% set icon = '<ha-icon icon="mdi:battery-20"></ha-icon>' %}
          {% elif st_ent < 35 %}
          {% set icon = '<ha-icon icon="mdi:battery-30"></ha-icon>' %}
          {% elif st_ent < 45 %}
          {% set icon = '<ha-icon icon="mdi:battery-40"></ha-icon>' %}
          {% elif st_ent < 55 %}
          {% set icon = '<ha-icon icon="mdi:battery-50"></ha-icon>' %}
          {% elif st_ent < 65 %}
          {% set icon = '<ha-icon icon="mdi:battery-60"></ha-icon>' %}
          {% elif st_ent < 75 %}
          {% set icon = '<ha-icon icon="mdi:battery-70"></ha-icon>' %}
          {% elif st_ent < 85 %}
          {% set icon = '<ha-icon icon="mdi:battery-80"></ha-icon>' %}
          {% elif st_ent < 95 %}
          {% set icon = '<ha-icon icon="mdi:battery-90"></ha-icon>' %}
          {% else %}
          {% set icon = '<ha-icon icon="mdi:battery"></ha-icon>' %}
          {% endif %}
          | {{ icon }} | {{ ent_nm  }} | {{  "&emsp;" ~ st_ent }}
        
          {% endfor %} </center></font>